56089917 has 18 divisors (see below), whose sum is σ = 87732762. Its totient is φ = 34515936.

The previous prime is 56089907. The next prime is 56089949. The reversal of 56089917 is 71998065.

56089917 is a `hidden beast` number, since 560 + 89 + 9 + 1 + 7 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2595321 + 53494596 = 1611^2 + 7314^2 .

It is not a de Polignac number, because 56089917 - 2⁸ = 56089661 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56089907) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16918 + ... + 19959.

Almost surely, 2^56089917 is an apocalyptic number.

It is an amenable number.

56089917 is a deficient number, since it is larger than the sum of its proper divisors (31642845).

56089917 is a wasteful number, since it uses less digits than its factorization.

56089917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36909 (or 36893 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 56089917 is about 7489.3201961193. The cubic root of 56089917 is about 382.7908949528.

The spelling of 56089917 in words is "fifty-six million, eighty-nine thousand, nine hundred seventeen".