55005904 has 20 divisors (see below), whose sum is σ = 110012800. Its totient is φ = 26615520.

The previous prime is 55005889. The next prime is 55005917. The reversal of 55005904 is 40950055.

55005904 is an admirable number.

It is a congruent number.

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, 54954 + ... + 55945.

It is an arithmetic number, because the mean of its divisors is an integer number (5500640).

Almost surely, 2^55005904 is an apocalyptic number.

It is an amenable number.

55005904 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55005904 is a wasteful number, since it uses less digits than its factorization.

55005904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110938 (or 110932 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 55005904 is about 7416.5965240129. The cubic root of 55005904 is about 380.3088532446.

Adding to 55005904 its reverse (40950055), we get a palindrome (95955959).

The spelling of 55005904 in words is "fifty-five million, five thousand, nine hundred four".