56166789 has 12 divisors (see below), whose sum is σ = 87116064. Its totient is φ = 32095224.

The previous prime is 56166749. The next prime is 56166791. The reversal of 56166789 is 98766165.

It is not a de Polignac number, because 56166789 - 2⁷ = 56166661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56166749) 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 11 ways as a sum of consecutive naturals, for example, 190897 + ... + 191190.

It is an arithmetic number, because the mean of its divisors is an integer number (7259672).

Almost surely, 2^56166789 is an apocalyptic number.

It is an amenable number.

56166789 is a deficient number, since it is larger than the sum of its proper divisors (30949275).

56166789 is a wasteful number, since it uses less digits than its factorization.

56166789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382104 (or 382097 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 56166789 is about 7494.4505469047. The cubic root of 56166789 is about 382.9656885141.

The spelling of 56166789 in words is "fifty-six million, one hundred sixty-six thousand, seven hundred eighty-nine".