56156166 has 40 divisors (see below), whose sum is σ = 137274984. Its totient is φ = 17016480.

The previous prime is 56156143. The next prime is 56156189. The reversal of 56156166 is 66165165.

It is an interprime number because it is at equal distance from previous prime (56156143) and next prime (56156189).

It is a self number, because there is not a number n which added to its sum of digits gives 56156166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13975 + ... + 17538.

Almost surely, 2^56156166 is an apocalyptic number.

56156166 is an abundant number, since it is smaller than the sum of its proper divisors (81118818).

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

56156166 is a wasteful number, since it uses less digits than its factorization.

56156166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31538 (or 31529 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 56156166 is about 7493.7417889863. The cubic root of 56156166 is about 382.9415431601.

It can be divided in two parts, 5615 and 6166, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 56156166 in words is "fifty-six million, one hundred fifty-six thousand, one hundred sixty-six".