56206891 has 8 divisors (see below), whose sum is σ = 61938800. Its totient is φ = 50676192.

The previous prime is 56206889. The next prime is 56206897. The reversal of 56206891 is 19860265.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56206891 - 2¹ = 56206889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56206891.

It is not an unprimeable number, because it can be changed into a prime (56206897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49716 + ... + 50833.

It is an arithmetic number, because the mean of its divisors is an integer number (7742350).

Almost surely, 2^56206891 is an apocalyptic number.

56206891 is a deficient number, since it is larger than the sum of its proper divisors (5731909).

56206891 is a wasteful number, since it uses less digits than its factorization.

56206891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100605.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 56206891 is about 7497.1255158227. The cubic root of 56206891 is about 383.0568101938.

The spelling of 56206891 in words is "fifty-six million, two hundred six thousand, eight hundred ninety-one".