56516658 has 64 divisors (see below), whose sum is σ = 132931584. Its totient is φ = 15840000.

The previous prime is 56516657. The next prime is 56516699. The reversal of 56516658 is 85661565.

It is not an unprimeable number, because it can be changed into a prime (56516657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46458 + ... + 47658.

It is an arithmetic number, because the mean of its divisors is an integer number (2077056).

Almost surely, 2^56516658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56516658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66465792).

56516658 is an abundant number, since it is smaller than the sum of its proper divisors (76414926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56516658 is a wasteful number, since it uses less digits than its factorization.

56516658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271.

The product of its digits is 216000, while the sum is 42.

The square root of 56516658 is about 7517.7561812019. The cubic root of 56516658 is about 383.7592213440.

The spelling of 56516658 in words is "fifty-six million, five hundred sixteen thousand, six hundred fifty-eight".