57134520 has 96 divisors (see below), whose sum is σ = 195483600. Its totient is φ = 14432256.

The previous prime is 57134513. The next prime is 57134527. The reversal of 57134520 is 2543175.

It is a happy number.

57134520 is a `hidden beast` number, since 5 + 7 + 134 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (57134513) and next prime (57134527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57134527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2664 + ... + 11016.

Almost surely, 2^57134520 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 57134520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97741800).

57134520 is an abundant number, since it is smaller than the sum of its proper divisors (138349080).

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

57134520 is a wasteful number, since it uses less digits than its factorization.

57134520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389 (or 8382 counting only the distinct ones).

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

The square root of 57134520 is about 7558.7379899028. The cubic root of 57134520 is about 385.1526240328.

Adding to 57134520 its reverse (2543175), we get a palindrome (59677695).

The spelling of 57134520 in words is "fifty-seven million, one hundred thirty-four thousand, five hundred twenty".