57742224 has 20 divisors (see below), whose sum is σ = 149167536. Its totient is φ = 19247392.

The previous prime is 57742207. The next prime is 57742247. The reversal of 57742224 is 42224775.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601434 + ... + 601529.

Almost surely, 2^57742224 is an apocalyptic number.

It is an amenable number.

57742224 is an abundant number, since it is smaller than the sum of its proper divisors (91425312).

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

57742224 is a wasteful number, since it uses less digits than its factorization.

57742224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202974 (or 1202968 counting only the distinct ones).

The product of its digits is 31360, while the sum is 33.

The square root of 57742224 is about 7598.8304363237. The cubic root of 57742224 is about 386.5133531444.

Adding to 57742224 its reverse (42224775), we get a palindrome (99966999).

The spelling of 57742224 in words is "fifty-seven million, seven hundred forty-two thousand, two hundred twenty-four".