57222210 has 32 divisors (see below), whose sum is σ = 137547072. Its totient is φ = 15235520.

The previous prime is 57222203. The next prime is 57222223. The reversal of 57222210 is 1222275.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27217 + ... + 29243.

It is an arithmetic number, because the mean of its divisors is an integer number (4298346).

Almost surely, 2^57222210 is an apocalyptic number.

57222210 is an abundant number, since it is smaller than the sum of its proper divisors (80324862).

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

57222210 is a wasteful number, since it uses less digits than its factorization.

57222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 57222210 is about 7564.5363374102. The cubic root of 57222210 is about 385.3495672557.

Adding to 57222210 its reverse (1222275), we get a palindrome (58444485).

The spelling of 57222210 in words is "fifty-seven million, two hundred twenty-two thousand, two hundred ten".