56215650 has 24 divisors (see below), whose sum is σ = 139415184. Its totient is φ = 14990800.

The previous prime is 56215589. The next prime is 56215673. The reversal of 56215650 is 5651265.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187236 + ... + 187535.

It is an arithmetic number, because the mean of its divisors is an integer number (5808966).

Almost surely, 2^56215650 is an apocalyptic number.

56215650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56215650 is an abundant number, since it is smaller than the sum of its proper divisors (83199534).

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

56215650 is a wasteful number, since it uses less digits than its factorization.

56215650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374786 (or 374781 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 56215650 is about 7497.7096502865. The cubic root of 56215650 is about 383.0767070443.

It can be divided in two parts, 56215 and 650, that added together give a palindrome (56865).

The spelling of 56215650 in words is "fifty-six million, two hundred fifteen thousand, six hundred fifty".