57132620 has 48 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 21528000.

The previous prime is 57132619. The next prime is 57132623. The reversal of 57132620 is 2623175.

It is a self number, because there is not a number n which added to its sum of digits gives 57132620.

It is not an unprimeable number, because it can be changed into a prime (57132623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95081 + ... + 95679.

It is an arithmetic number, because the mean of its divisors is an integer number (2646000).

Almost surely, 2^57132620 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 57132620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63504000).

57132620 is an abundant number, since it is smaller than the sum of its proper divisors (69875380).

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

57132620 is a wasteful number, since it uses less digits than its factorization.

57132620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 57132620 is about 7558.6123065018. The cubic root of 57132620 is about 385.1483545876.

Adding to 57132620 its reverse (2623175), we get a palindrome (59755795).

The spelling of 57132620 in words is "fifty-seven million, one hundred thirty-two thousand, six hundred twenty".