56221392 has 40 divisors (see below), whose sum is σ = 145660320. Its totient is φ = 18686080.

The previous prime is 56221391. The next prime is 56221409. The reversal of 56221392 is 29312265.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56221391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17167 + ... + 20177.

It is an arithmetic number, because the mean of its divisors is an integer number (3641508).

Almost surely, 2^56221392 is an apocalyptic number.

It is an amenable number.

56221392 is an abundant number, since it is smaller than the sum of its proper divisors (89438928).

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

56221392 is a wasteful number, since it uses less digits than its factorization.

56221392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411 (or 3405 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 56221392 is about 7498.0925574442. The cubic root of 56221392 is about 383.0897493885.

The spelling of 56221392 in words is "fifty-six million, two hundred twenty-one thousand, three hundred ninety-two".