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54479393 = 82965717
BaseRepresentation
bin1100111111010…
…0101000100001
310210111211200022
43033310220201
5102421320033
65223403225
71231032023
oct317645041
9123454608
1054479393
11288301a1
12162b3515
13b396237
147342013
154bb2098
hex33f4a21

54479393 has 4 divisors (see below), whose sum is σ = 54545940. Its totient is φ = 54412848.

The previous prime is 54479377. The next prime is 54479417. The reversal of 54479393 is 39397445.

54479393 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: 39397445 = 57879489.

It can be written as a sum of positive squares in 2 ways, for example, as 23931664 + 30547729 = 4892^2 + 5527^2 .

It is a cyclic number.

It is not a de Polignac number, because 54479393 - 24 = 54479377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54479093) 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, 32030 + ... + 33687.

It is an arithmetic number, because the mean of its divisors is an integer number (13636485).

Almost surely, 254479393 is an apocalyptic number.

It is an amenable number.

54479393 is a deficient number, since it is larger than the sum of its proper divisors (66547).

54479393 is an equidigital number, since it uses as much as digits as its factorization.

54479393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66546.

The product of its digits is 408240, while the sum is 44.

The square root of 54479393 is about 7381.0157160109. The cubic root of 54479393 is about 379.0915348513.

It can be divided in two parts, 54479 and 393, that added together give a cube (54872 = 383).

The spelling of 54479393 in words is "fifty-four million, four hundred seventy-nine thousand, three hundred ninety-three".

Divisors: 1 829 65717 54479393