57201516 has 18 divisors (see below), whose sum is σ = 144592812. Its totient is φ = 19067160.

The previous prime is 57201509. The next prime is 57201517. The reversal of 57201516 is 61510275.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 57201516.

It is not an unprimeable number, because it can be changed into a prime (57201517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 794430 + ... + 794501.

It is an arithmetic number, because the mean of its divisors is an integer number (8032934).

Almost surely, 2^57201516 is an apocalyptic number.

It is an amenable number.

57201516 is an abundant number, since it is smaller than the sum of its proper divisors (87391296).

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

57201516 is a wasteful number, since it uses less digits than its factorization.

57201516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588941 (or 1588936 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 57201516 is about 7563.1683836868. The cubic root of 57201516 is about 385.3031086899.

The spelling of 57201516 in words is "fifty-seven million, two hundred one thousand, five hundred sixteen".