57006520 has 48 divisors (see below), whose sum is σ = 132625080. Its totient is φ = 22052160.

The previous prime is 57006511. The next prime is 57006533. The reversal of 57006520 is 2560075.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37699 + ... + 39181.

Almost surely, 2^57006520 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 57006520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66312540).

57006520 is an abundant number, since it is smaller than the sum of its proper divisors (75618560).

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

57006520 is a wasteful number, since it uses less digits than its factorization.

57006520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 1521 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 57006520 is about 7550.2662204720. The cubic root of 57006520 is about 384.8647863854.

Adding to 57006520 its reverse (2560075), we get a palindrome (59566595).

The spelling of 57006520 in words is "fifty-seven million, six thousand, five hundred twenty".