57353520 has 120 divisors (see below), whose sum is σ = 206866224. Its totient is φ = 13106688.

The previous prime is 57353519. The next prime is 57353531. The reversal of 57353520 is 2535375.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9322 + ... + 14198.

Almost surely, 2^57353520 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 57353520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103433112).

57353520 is an abundant number, since it is smaller than the sum of its proper divisors (149512704).

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

57353520 is a wasteful number, since it uses less digits than its factorization.

57353520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907 (or 4894 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 30.

The square root of 57353520 is about 7573.2106797580. The cubic root of 57353520 is about 385.6441008885.

Adding to 57353520 its reverse (2535375), we get a palindrome (59888895).

The spelling of 57353520 in words is "fifty-seven million, three hundred fifty-three thousand, five hundred twenty".