56887111 has 4 divisors (see below), whose sum is σ = 56903112. Its totient is φ = 56871112.

The previous prime is 56887097. The next prime is 56887123. The reversal of 56887111 is 11178865.

56887111 is a nontrivial binomial coefficient, being equal to C(10667, 2).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11178865 = 5 ⋅2235773.

It is not a de Polignac number, because 56887111 - 2⁵ = 56887079 is a prime.

It is a super-2 number, since 2×56887111² = 6472286795852642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56887141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 10666.

It is an arithmetic number, because the mean of its divisors is an integer number (14225778).

Almost surely, 2^56887111 is an apocalyptic number.

56887111 is the 10666-th triangular number.

56887111 is the 3556-th centered nonagonal number.

56887111 is a deficient number, since it is larger than the sum of its proper divisors (16001).

56887111 is a wasteful number, since it uses less digits than its factorization.

56887111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000.

The product of its digits is 13440, while the sum is 37.

The square root of 56887111 is about 7542.3544732398. The cubic root of 56887111 is about 384.5958788744.

The spelling of 56887111 in words is "fifty-six million, eight hundred eighty-seven thousand, one hundred eleven".