56142687 has 8 divisors (see below), whose sum is σ = 79260336. Its totient is φ = 35226752.

The previous prime is 56142683. The next prime is 56142707. The reversal of 56142687 is 78624165.

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 56142687 - 2² = 56142683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56142683) 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, 550368 + ... + 550469.

It is an arithmetic number, because the mean of its divisors is an integer number (9907542).

Almost surely, 2^56142687 is an apocalyptic number.

56142687 is a deficient number, since it is larger than the sum of its proper divisors (23117649).

56142687 is a wasteful number, since it uses less digits than its factorization.

56142687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100857.

The product of its digits is 80640, while the sum is 39.

The square root of 56142687 is about 7492.8423845694. The cubic root of 56142687 is about 382.9109019295.

The spelling of 56142687 in words is "fifty-six million, one hundred forty-two thousand, six hundred eighty-seven".