56552216 has 64 divisors (see below), whose sum is σ = 128217600. Its totient is φ = 22903584.

The previous prime is 56552203. The next prime is 56552231. The reversal of 56552216 is 61225565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681311 + ... + 681393.

It is an arithmetic number, because the mean of its divisors is an integer number (2003400).

Almost surely, 2^56552216 is an apocalyptic number.

56552216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56552216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64108800).

56552216 is an abundant number, since it is smaller than the sum of its proper divisors (71665384).

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

56552216 is an equidigital number, since it uses as much as digits as its factorization.

56552216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 115 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 56552216 is about 7520.1207437115. The cubic root of 56552216 is about 383.8396864086.

The spelling of 56552216 in words is "fifty-six million, five hundred fifty-two thousand, two hundred sixteen".