55904605 has 16 divisors (see below), whose sum is σ = 72420480. Its totient is φ = 41301568.

The previous prime is 55904581. The next prime is 55904621. The reversal of 55904605 is 50640955.

It is a happy number.

55904605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55904605 - 2¹³ = 55896413 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 5047 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (4526280).

Almost surely, 2^55904605 is an apocalyptic number.

It is an amenable number.

55904605 is a deficient number, since it is larger than the sum of its proper divisors (16515875).

55904605 is a wasteful number, since it uses less digits than its factorization.

55904605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16820.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 55904605 is about 7476.9382102569. The cubic root of 55904605 is about 382.3688701404.

The spelling of 55904605 in words is "fifty-five million, nine hundred four thousand, six hundred five".