57222006 has 16 divisors (see below), whose sum is σ = 114772464. Its totient is φ = 19019264.

The previous prime is 57221981. The next prime is 57222007. The reversal of 57222006 is 60022275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57222007) 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, 11391 + ... + 15626.

It is an arithmetic number, because the mean of its divisors is an integer number (7173279).

Almost surely, 2^57222006 is an apocalyptic number.

57222006 is an abundant number, since it is smaller than the sum of its proper divisors (57550458).

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

57222006 is a wasteful number, since it uses less digits than its factorization.

57222006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27375.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 57222006 is about 7564.5228534257. The cubic root of 57222006 is about 385.3491093251.

It can be divided in two parts, 572 and 22006, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 57222006 in words is "fifty-seven million, two hundred twenty-two thousand, six".