57220960 has 48 divisors (see below), whose sum is σ = 138344976. Its totient is φ = 22353408.

The previous prime is 57220939. The next prime is 57220991. The reversal of 57220960 is 6902275.

57220960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722 + ... + 11038.

It is an arithmetic number, because the mean of its divisors is an integer number (2882187).

Almost surely, 2^57220960 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 57220960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69172488).

57220960 is an abundant number, since it is smaller than the sum of its proper divisors (81124016).

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

57220960 is a wasteful number, since it uses less digits than its factorization.

57220960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8375 (or 8367 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57220960 is about 7564.4537145785. The cubic root of 57220960 is about 385.3467612912.

The spelling of 57220960 in words is "fifty-seven million, two hundred twenty thousand, nine hundred sixty".