57409144 has 16 divisors (see below), whose sum is σ = 115922520. Its totient is φ = 26496480.

The previous prime is 57409139. The next prime is 57409147. The reversal of 57409144 is 44190475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57409147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275902 + ... + 276109.

Almost surely, 2^57409144 is an apocalyptic number.

It is an amenable number.

57409144 is an abundant number, since it is smaller than the sum of its proper divisors (58513376).

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

57409144 is a wasteful number, since it uses less digits than its factorization.

57409144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552030 (or 552026 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 57409144 is about 7576.8822084021. The cubic root of 57409144 is about 385.7687322187.

It can be divided in two parts, 5740 and 9144, that added together give a square (14884 = 122²).

The spelling of 57409144 in words is "fifty-seven million, four hundred nine thousand, one hundred forty-four".