56287886 has 4 divisors (see below), whose sum is σ = 84431832. Its totient is φ = 28143942.

The previous prime is 56287873. The next prime is 56287897. The reversal of 56287886 is 68878265.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×56287886² = 6336652220697992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14071970 + ... + 14071973.

It is an arithmetic number, because the mean of its divisors is an integer number (21107958).

Almost surely, 2^56287886 is an apocalyptic number.

56287886 is a deficient number, since it is larger than the sum of its proper divisors (28143946).

56287886 is a wasteful number, since it uses less digits than its factorization.

56287886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28143945.

The product of its digits is 1290240, while the sum is 50.

The square root of 56287886 is about 7502.5253081879. The cubic root of 56287886 is about 383.2407188147.

The spelling of 56287886 in words is "fifty-six million, two hundred eighty-seven thousand, eight hundred eighty-six".