56017687 has 4 divisors (see below), whose sum is σ = 61110216. Its totient is φ = 50925160.

The previous prime is 56017679. The next prime is 56017693. The reversal of 56017687 is 78671065.

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

It is not a de Polignac number, because 56017687 - 2³ = 56017679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56017657) 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, 2546248 + ... + 2546269.

It is an arithmetic number, because the mean of its divisors is an integer number (15277554).

Almost surely, 2^56017687 is an apocalyptic number.

56017687 is a deficient number, since it is larger than the sum of its proper divisors (5092529).

56017687 is a wasteful number, since it uses less digits than its factorization.

56017687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092528.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 56017687 is about 7484.4964426473. The cubic root of 56017687 is about 382.6265109026.

The spelling of 56017687 in words is "fifty-six million, seventeen thousand, six hundred eighty-seven".