55904738 has 18 divisors (see below), whose sum is σ = 89367393. Its totient is φ = 26223520.

The previous prime is 55904713. The next prime is 55904741. The reversal of 55904738 is 83740955.

It can be written as a sum of positive squares in 2 ways, for example, as 51165409 + 4739329 = 7153^2 + 2177^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5287.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55904695 and 55904704.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 179603 + ... + 179913.

Almost surely, 2^55904738 is an apocalyptic number.

55904738 is a deficient number, since it is larger than the sum of its proper divisors (33462655).

55904738 is an equidigital number, since it uses as much as digits as its factorization.

55904738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 55904738 is about 7476.9471042666. The cubic root of 55904738 is about 382.3691733654.

The spelling of 55904738 in words is "fifty-five million, nine hundred four thousand, seven hundred thirty-eight".