56881887 has 16 divisors (see below), whose sum is σ = 77023872. Its totient is φ = 37335200.

The previous prime is 56881873. The next prime is 56881897. The reversal of 56881887 is 78818865.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56881887 - 2⁸ = 56881631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56881837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68368 + ... + 69194.

It is an arithmetic number, because the mean of its divisors is an integer number (4813992).

Almost surely, 2^56881887 is an apocalyptic number.

56881887 is a deficient number, since it is larger than the sum of its proper divisors (20141985).

56881887 is a wasteful number, since it uses less digits than its factorization.

56881887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158.

The product of its digits is 860160, while the sum is 51.

The square root of 56881887 is about 7542.0081543313. The cubic root of 56881887 is about 384.5841059066.

The spelling of 56881887 in words is "fifty-six million, eight hundred eighty-one thousand, eight hundred eighty-seven".