56220612 has 48 divisors (see below), whose sum is σ = 153982080. Its totient is φ = 15628032.

The previous prime is 56220607. The next prime is 56220613. The reversal of 56220612 is 21602265.

It is not an unprimeable number, because it can be changed into a prime (56220613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5937 + ... + 12152.

It is an arithmetic number, because the mean of its divisors is an integer number (3207960).

Almost surely, 2^56220612 is an apocalyptic number.

It is an amenable number.

56220612 is an abundant number, since it is smaller than the sum of its proper divisors (97761468).

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

56220612 is a wasteful number, since it uses less digits than its factorization.

56220612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18140 (or 18138 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 56220612 is about 7498.0405440355. The cubic root of 56220612 is about 383.0879777533.

Adding to 56220612 its reverse (21602265), we get a palindrome (77822877).

The spelling of 56220612 in words is "fifty-six million, two hundred twenty thousand, six hundred twelve".