56157555 has 8 divisors (see below), whose sum is σ = 89852112. Its totient is φ = 29950688.

The previous prime is 56157547. The next prime is 56157571. The reversal of 56157555 is 55575165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56157555 - 2³ = 56157547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871904 + ... + 1871933.

It is an arithmetic number, because the mean of its divisors is an integer number (11231514).

Almost surely, 2^56157555 is an apocalyptic number.

56157555 is a deficient number, since it is larger than the sum of its proper divisors (33694557).

56157555 is a wasteful number, since it uses less digits than its factorization.

56157555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743845.

The product of its digits is 131250, while the sum is 39.

The square root of 56157555 is about 7493.8344657458. The cubic root of 56157555 is about 382.9447004353.

The spelling of 56157555 in words is "fifty-six million, one hundred fifty-seven thousand, five hundred fifty-five".