57222656 has 40 divisors (see below), whose sum is σ = 115975464. Its totient is φ = 28200960.

The previous prime is 57222653. The next prime is 57222667. The reversal of 57222656 is 65622275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57222653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36611 + ... + 38141.

Almost surely, 2^57222656 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 57222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57987732).

57222656 is an abundant number, since it is smaller than the sum of its proper divisors (58752808).

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

57222656 is an equidigital number, since it uses as much as digits as its factorization.

57222656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622 (or 1606 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 57222656 is about 7564.5658170182. The cubic root of 57222656 is about 385.3505684140.

The spelling of 57222656 in words is "fifty-seven million, two hundred twenty-two thousand, six hundred fifty-six".