57288722 has 16 divisors (see below), whose sum is σ = 89830080. Its totient is φ = 27349872.

The previous prime is 57288709. The next prime is 57288727. The reversal of 57288722 is 22788275.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 57288722.

It is not an unprimeable number, because it can be changed into a prime (57288727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50453 + ... + 51575.

It is an arithmetic number, because the mean of its divisors is an integer number (5614380).

Almost surely, 2^57288722 is an apocalyptic number.

57288722 is a deficient number, since it is larger than the sum of its proper divisors (32541358).

57288722 is a wasteful number, since it uses less digits than its factorization.

57288722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257.

The product of its digits is 125440, while the sum is 41.

The square root of 57288722 is about 7568.9313644662. The cubic root of 57288722 is about 385.4988126063.

The spelling of 57288722 in words is "fifty-seven million, two hundred eighty-eight thousand, seven hundred twenty-two".