56166210 has 40 divisors (see below), whose sum is σ = 151026876. Its totient is φ = 14977440.

The previous prime is 56166199. The next prime is 56166211. The reversal of 56166210 is 1266165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54066609 + 2099601 = 7353^2 + 1449^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (56166211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33861 + ... + 35480.

Almost surely, 2^56166210 is an apocalyptic number.

56166210 is an abundant number, since it is smaller than the sum of its proper divisors (94860666).

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

56166210 is a wasteful number, since it uses less digits than its factorization.

56166210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69360 (or 69351 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 56166210 is about 7494.4119182228. The cubic root of 56166210 is about 382.9643725651.

The spelling of 56166210 in words is "fifty-six million, one hundred sixty-six thousand, two hundred ten".