56152220 has 24 divisors (see below), whose sum is σ = 124126800. Its totient is φ = 21278592.

The previous prime is 56152211. The next prime is 56152237. The reversal of 56152220 is 2225165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73505 + ... + 74264.

It is an arithmetic number, because the mean of its divisors is an integer number (5171950).

Almost surely, 2^56152220 is an apocalyptic number.

It is an amenable number.

56152220 is an abundant number, since it is smaller than the sum of its proper divisors (67974580).

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

56152220 is a wasteful number, since it uses less digits than its factorization.

56152220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147797 (or 147795 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 56152220 is about 7493.4784980008. The cubic root of 56152220 is about 382.9325733958.

Adding to 56152220 its reverse (2225165), we get a palindrome (58377385).

The spelling of 56152220 in words is "fifty-six million, one hundred fifty-two thousand, two hundred twenty".