56887139 has 8 divisors (see below), whose sum is σ = 59306880. Its totient is φ = 54504000.

The previous prime is 56887123. The next prime is 56887141. The reversal of 56887139 is 93178865.

56887139 = T₄₅₅ + T₄₅₆ + ... + T₇₅₇.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56887139 - 2⁴ = 56887123 is a prime.

It is a super-2 number, since 2×56887139² = 6472293167210642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56887093 and 56887102.

It is not an unprimeable number, because it can be changed into a prime (56887169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5954 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (7413360).

Almost surely, 2^56887139 is an apocalyptic number.

56887139 is a deficient number, since it is larger than the sum of its proper divisors (2419741).

56887139 is a wasteful number, since it uses less digits than its factorization.

56887139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18301.

The product of its digits is 362880, while the sum is 47.

The square root of 56887139 is about 7542.3563294238. The cubic root of 56887139 is about 384.5959419741.

The spelling of 56887139 in words is "fifty-six million, eight hundred eighty-seven thousand, one hundred thirty-nine".