57387222 has 48 divisors (see below), whose sum is σ = 128637600. Its totient is φ = 18475776.

The previous prime is 57387217. The next prime is 57387229. The reversal of 57387222 is 22278375.

It is a happy number.

57387222 is a `hidden beast` number, since 57 + 387 + 222 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57387229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132318 + ... + 132750.

It is an arithmetic number, because the mean of its divisors is an integer number (2679950).

Almost surely, 2^57387222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57387222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64318800).

57387222 is an abundant number, since it is smaller than the sum of its proper divisors (71250378).

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

57387222 is a wasteful number, since it uses less digits than its factorization.

57387222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 674 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 57387222 is about 7575.4354330296. The cubic root of 57387222 is about 385.7196233241.

The spelling of 57387222 in words is "fifty-seven million, three hundred eighty-seven thousand, two hundred twenty-two".