56574280 has 64 divisors (see below), whose sum is σ = 147047040. Its totient is φ = 19187712.

The previous prime is 56574277. The next prime is 56574281. The reversal of 56574280 is 8247565.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56574281) 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, 26119 + ... + 28201.

It is an arithmetic number, because the mean of its divisors is an integer number (2297610).

Almost surely, 2^56574280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56574280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73523520).

56574280 is an abundant number, since it is smaller than the sum of its proper divisors (90472760).

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

56574280 is a wasteful number, since it uses less digits than its factorization.

56574280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 56574280 is about 7521.5875983731. The cubic root of 56574280 is about 383.8895986153.

The spelling of 56574280 in words is "fifty-six million, five hundred seventy-four thousand, two hundred eighty".