55657404 has 36 divisors (see below), whose sum is σ = 153480600. Its totient is φ = 16865760.

The previous prime is 55657391. The next prime is 55657451. The reversal of 55657404 is 40475655.

It is a happy number.

55657404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 69879 + ... + 70670.

It is an arithmetic number, because the mean of its divisors is an integer number (4263350).

Almost surely, 2^55657404 is an apocalyptic number.

It is an amenable number.

55657404 is an abundant number, since it is smaller than the sum of its proper divisors (97823196).

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

55657404 is a wasteful number, since it uses less digits than its factorization.

55657404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140570 (or 140565 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 55657404 is about 7460.3889979008. The cubic root of 55657404 is about 381.8044465684.

The spelling of 55657404 in words is "fifty-five million, six hundred fifty-seven thousand, four hundred four".