55540904 has 16 divisors (see below), whose sum is σ = 110265300. Its totient is φ = 26136832.

The previous prime is 55540879. The next prime is 55540913. The reversal of 55540904 is 40904555.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53260804 + 2280100 = 7298^2 + 1510^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204059 + ... + 204330.

Almost surely, 2^55540904 is an apocalyptic number.

It is an amenable number.

55540904 is a deficient number, since it is larger than the sum of its proper divisors (54724396).

55540904 is a wasteful number, since it uses less digits than its factorization.

55540904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408412 (or 408408 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 55540904 is about 7452.5770039631. The cubic root of 55540904 is about 381.5378675466.

The spelling of 55540904 in words is "fifty-five million, five hundred forty thousand, nine hundred four".