57442270 has 16 divisors (see below), whose sum is σ = 107892000. Its totient is φ = 21977824.

The previous prime is 57442267. The next prime is 57442277. The reversal of 57442270 is 7224475.

It is a super-2 number, since 2×57442270² = 6599228765505800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57442277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124645 + ... + 125104.

It is an arithmetic number, because the mean of its divisors is an integer number (6743250).

Almost surely, 2^57442270 is an apocalyptic number.

57442270 is a deficient number, since it is larger than the sum of its proper divisors (50449730).

57442270 is a wasteful number, since it uses less digits than its factorization.

57442270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249779.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 57442270 is about 7579.0678846412. The cubic root of 57442270 is about 385.8429162077.

The spelling of 57442270 in words is "fifty-seven million, four hundred forty-two thousand, two hundred seventy".