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55380541 = 88162861
BaseRepresentation
bin1101001101000…
…0101000111101
310212012121211011
43103100220331
5103134134131
65254555221
71241504206
oct323205075
9125177734
1055380541
1129296247
1216668b11
13b620468
1474d85ad
154cde0b1
hex34d0a3d

55380541 has 4 divisors (see below), whose sum is σ = 55444284. Its totient is φ = 55316800.

The previous prime is 55380529. The next prime is 55380551. The reversal of 55380541 is 14508355.

55380541 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.

It can be written as a sum of positive squares in 2 ways, for example, as 35354916 + 20025625 = 5946^2 + 4475^2 .

It is a cyclic number.

It is not a de Polignac number, because 55380541 - 225 = 21826109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55380511) 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, 30550 + ... + 32311.

It is an arithmetic number, because the mean of its divisors is an integer number (13861071).

Almost surely, 255380541 is an apocalyptic number.

It is an amenable number.

55380541 is a deficient number, since it is larger than the sum of its proper divisors (63743).

55380541 is an equidigital number, since it uses as much as digits as its factorization.

55380541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63742.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 55380541 is about 7441.8103308268. The cubic root of 55380541 is about 381.1703093853.

Adding to 55380541 its reverse (14508355), we get a palindrome (69888896).

The spelling of 55380541 in words is "fifty-five million, three hundred eighty thousand, five hundred forty-one".

Divisors: 1 881 62861 55380541