57520240 has 80 divisors (see below), whose sum is σ = 142990848. Its totient is φ = 21466368.

The previous prime is 57520219. The next prime is 57520249. The reversal of 57520240 is 4202575.

57520240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (57520249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78757 + ... + 79483.

Almost surely, 2^57520240 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 57520240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71495424).

57520240 is an abundant number, since it is smaller than the sum of its proper divisors (85470608).

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

57520240 is a wasteful number, since it uses less digits than its factorization.

57520240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 57520240 is about 7584.2099127068. The cubic root of 57520240 is about 386.0174135522.

The spelling of 57520240 in words is "fifty-seven million, five hundred twenty thousand, two hundred forty".