56555169 has 16 divisors (see below), whose sum is σ = 83493120. Its totient is φ = 33762960.

The previous prime is 56555167. The next prime is 56555173. The reversal of 56555169 is 96155565.

It is not a de Polignac number, because 56555169 - 2¹ = 56555167 is a prime.

It is a super-2 number, since 2×56555169² = 6396974281237122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56555169.

It is not an unprimeable number, because it can be changed into a prime (56555167) 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, 10579 + ... + 15000.

It is an arithmetic number, because the mean of its divisors is an integer number (5218320).

Almost surely, 2^56555169 is an apocalyptic number.

It is an amenable number.

56555169 is a deficient number, since it is larger than the sum of its proper divisors (26937951).

56555169 is a wasteful number, since it uses less digits than its factorization.

56555169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25660.

The product of its digits is 202500, while the sum is 42.

The square root of 56555169 is about 7520.3170810811. The cubic root of 56555169 is about 383.8463673072.

The spelling of 56555169 in words is "fifty-six million, five hundred fifty-five thousand, one hundred sixty-nine".