57260520 has 192 divisors, whose sum is σ = 198918720. Its totient is φ = 14805504.

The previous prime is 57260513. The next prime is 57260527. The reversal of 57260520 is 2506275.

57260520 is a `hidden beast` number, since 57 + 2 + 605 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (57260513) and next prime (57260527).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (57260527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417892 + ... + 418028.

It is an arithmetic number, because the mean of its divisors is an integer number (1036035).

Almost surely, 2^57260520 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 57260520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99459360).

57260520 is an abundant number, since it is smaller than the sum of its proper divisors (141658200).

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

57260520 is a wasteful number, since it uses less digits than its factorization.

57260520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 57260520 is about 7567.0681244456. The cubic root of 57260520 is about 385.4355446447.

Adding to 57260520 its reverse (2506275), we get a palindrome (59766795).

The spelling of 57260520 in words is "fifty-seven million, two hundred sixty thousand, five hundred twenty".