56223140 has 48 divisors (see below), whose sum is σ = 121224432. Its totient is φ = 21897216.

The previous prime is 56223127. The next prime is 56223149. The reversal of 56223140 is 4132265.

It can be written as a sum of positive squares in 8 ways, for example, as 33124 + 56190016 = 182^2 + 7496^2 .

It is a super-2 number, since 2×56223140² = 6322082942919200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56223149) 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, 141422 + ... + 141818.

It is an arithmetic number, because the mean of its divisors is an integer number (2525509).

Almost surely, 2^56223140 is an apocalyptic number.

It is an amenable number.

56223140 is an abundant number, since it is smaller than the sum of its proper divisors (65001292).

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

56223140 is a wasteful number, since it uses less digits than its factorization.

56223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 56223140 is about 7498.2091195165. The cubic root of 56223140 is about 383.0937196088.

The spelling of 56223140 in words is "fifty-six million, two hundred twenty-three thousand, one hundred forty".