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54974881 = 134228837
BaseRepresentation
bin1101000110110…
…1100110100001
310211110000100201
43101231212201
5103033144011
65242145201
71235164423
oct321554641
9124400321
1054974881
1129039495
12164b2201
13b50a920
147430813
154c5dcc1
hex346d9a1

54974881 has 4 divisors (see below), whose sum is σ = 59203732. Its totient is φ = 50746032.

The previous prime is 54974879. The next prime is 54974893. The reversal of 54974881 is 18847945.

54974881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18847945 = 53769589.

It can be written as a sum of positive squares in 2 ways, for example, as 16646400 + 38328481 = 4080^2 + 6191^2 .

It is a cyclic number.

It is not a de Polignac number, because 54974881 - 21 = 54974879 is a prime.

It is a super-2 number, since 2×549748812 = 6044475081928322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54974831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2114406 + ... + 2114431.

It is an arithmetic number, because the mean of its divisors is an integer number (14800933).

Almost surely, 254974881 is an apocalyptic number.

It is an amenable number.

54974881 is a deficient number, since it is larger than the sum of its proper divisors (4228851).

54974881 is a wasteful number, since it uses less digits than its factorization.

54974881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228850.

The product of its digits is 322560, while the sum is 46.

The square root of 54974881 is about 7414.5047710552. The cubic root of 54974881 is about 380.2373424948.

It can be divided in two parts, 54974 and 881, that added together give a palindrome (55855).

The spelling of 54974881 in words is "fifty-four million, nine hundred seventy-four thousand, eight hundred eighty-one".

Divisors: 1 13 4228837 54974881