57725520 has 80 divisors (see below), whose sum is σ = 181928832. Its totient is φ = 15137280.

The previous prime is 57725519. The next prime is 57725527. The reversal of 57725520 is 2552775.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57725527) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12669 + ... + 16611.

Almost surely, 2^57725520 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 57725520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90964416).

57725520 is an abundant number, since it is smaller than the sum of its proper divisors (124203312).

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

57725520 is a wasteful number, since it uses less digits than its factorization.

57725520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020 (or 4014 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 57725520 is about 7597.7312403111. The cubic root of 57725520 is about 386.4760786205.

It can be divided in two parts, 577255 and 20, that added together give a triangular number (577275 = T₁₀₇₄).

The spelling of 57725520 in words is "fifty-seven million, seven hundred twenty-five thousand, five hundred twenty".