56255220 has 72 divisors (see below), whose sum is σ = 195022464. Its totient is φ = 12858048.

The previous prime is 56255203. The next prime is 56255231. The reversal of 56255220 is 2255265.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21064 + ... + 23583.

Almost surely, 2^56255220 is an apocalyptic number.

It is an amenable number.

56255220 is an abundant number, since it is smaller than the sum of its proper divisors (138767244).

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

56255220 is a wasteful number, since it uses less digits than its factorization.

56255220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44669 (or 44664 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 56255220 is about 7500.3479919268. The cubic root of 56255220 is about 383.1665680827.

The spelling of 56255220 in words is "fifty-six million, two hundred fifty-five thousand, two hundred twenty".