57001222 has 16 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 27202120.

The previous prime is 57001213. The next prime is 57001237. The reversal of 57001222 is 22210075.

It is a self number, because there is not a number n which added to its sum of digits gives 57001222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25947 + ... + 28057.

It is an arithmetic number, because the mean of its divisors is an integer number (5588352).

Almost surely, 2^57001222 is an apocalyptic number.

57001222 is a deficient number, since it is larger than the sum of its proper divisors (32412410).

57001222 is a wasteful number, since it uses less digits than its factorization.

57001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 57001222 is about 7549.9153637640. The cubic root of 57001222 is about 384.8528633235.

Adding to 57001222 its reverse (22210075), we get a palindrome (79211297).

The spelling of 57001222 in words is "fifty-seven million, one thousand, two hundred twenty-two".