56881886 has 4 divisors (see below), whose sum is σ = 85322832. Its totient is φ = 28440942.

The previous prime is 56881873. The next prime is 56881897. The reversal of 56881886 is 68818865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68818865 = 5 ⋅13763773.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14220470 + ... + 14220473.

It is an arithmetic number, because the mean of its divisors is an integer number (21330708).

Almost surely, 2^56881886 is an apocalyptic number.

56881886 is a deficient number, since it is larger than the sum of its proper divisors (28440946).

56881886 is a wasteful number, since it uses less digits than its factorization.

56881886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28440945.

The product of its digits is 737280, while the sum is 50.

The square root of 56881886 is about 7542.0080880360. The cubic root of 56881886 is about 384.5841036529.

The spelling of 56881886 in words is "fifty-six million, eight hundred eighty-one thousand, eight hundred eighty-six".