56206566 has 48 divisors (see below), whose sum is σ = 131695200. Its totient is φ = 17222400.

The previous prime is 56206561. The next prime is 56206567. The reversal of 56206566 is 66560265.

It is a self number, because there is not a number n which added to its sum of digits gives 56206566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56206561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93535 + ... + 94133.

It is an arithmetic number, because the mean of its divisors is an integer number (2743650).

Almost surely, 2^56206566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56206566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65847600).

56206566 is an abundant number, since it is smaller than the sum of its proper divisors (75488634).

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

56206566 is a wasteful number, since it uses less digits than its factorization.

56206566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 56206566 is about 7497.1038408175. The cubic root of 56206566 is about 383.0560718875.

The spelling of 56206566 in words is "fifty-six million, two hundred six thousand, five hundred sixty-six".