57240144 has 60 divisors (see below), whose sum is σ = 172521076. Its totient is φ = 17611776.

The previous prime is 57240121. The next prime is 57240191. The reversal of 57240144 is 44104275.

It can be written as a sum of positive squares in 2 ways, for example, as 13838400 + 43401744 = 3720^2 + 6588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13417 + ... + 17160.

Almost surely, 2^57240144 is an apocalyptic number.

It is an amenable number.

57240144 is an abundant number, since it is smaller than the sum of its proper divisors (115280932).

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

57240144 is a wasteful number, since it uses less digits than its factorization.

57240144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30604 (or 30595 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 57240144 is about 7565.7216443641. The cubic root of 57240144 is about 385.3898204912.

The spelling of 57240144 in words is "fifty-seven million, two hundred forty thousand, one hundred forty-four".