56621850 has 48 divisors (see below), whose sum is σ = 141166560. Its totient is φ = 15019200.

The previous prime is 56621827. The next prime is 56621857. The reversal of 56621850 is 5812665.

It is not an unprimeable number, because it can be changed into a prime (56621857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30756 + ... + 32544.

It is an arithmetic number, because the mean of its divisors is an integer number (2940970).

Almost surely, 2^56621850 is an apocalyptic number.

56621850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56621850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70583280).

56621850 is an abundant number, since it is smaller than the sum of its proper divisors (84544710).

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

56621850 is a wasteful number, since it uses less digits than its factorization.

56621850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 56621850 is about 7524.7491652546. The cubic root of 56621850 is about 383.9971652351.

The spelling of 56621850 in words is "fifty-six million, six hundred twenty-one thousand, eight hundred fifty".