57487144 has 64 divisors (see below), whose sum is σ = 130798080. Its totient is φ = 23328000.

The previous prime is 57487121. The next prime is 57487163. The reversal of 57487144 is 44178475.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 57487097 and 57487106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34654 + ... + 36274.

It is an arithmetic number, because the mean of its divisors is an integer number (2043720).

Almost surely, 2^57487144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57487144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65399040).

57487144 is an abundant number, since it is smaller than the sum of its proper divisors (73310936).

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

57487144 is a wasteful number, since it uses less digits than its factorization.

57487144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1678 counting only the distinct ones).

The product of its digits is 125440, while the sum is 40.

The square root of 57487144 is about 7582.0276971269. The cubic root of 57487144 is about 385.9433637720.

The spelling of 57487144 in words is "fifty-seven million, four hundred eighty-seven thousand, one hundred forty-four".