56601555 has 16 divisors (see below), whose sum is σ = 91839744. Its totient is φ = 29761760.

The previous prime is 56601553. The next prime is 56601577. The reversal of 56601555 is 55510665.

It is not a de Polignac number, because 56601555 - 2¹ = 56601553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56601553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25509 + ... + 27638.

It is an arithmetic number, because the mean of its divisors is an integer number (5739984).

Almost surely, 2^56601555 is an apocalyptic number.

56601555 is a deficient number, since it is larger than the sum of its proper divisors (35238189).

56601555 is a wasteful number, since it uses less digits than its factorization.

56601555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53226.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 56601555 is about 7523.4004944573. The cubic root of 56601555 is about 383.9512809828.

The spelling of 56601555 in words is "fifty-six million, six hundred one thousand, five hundred fifty-five".