57752993012521 has 3 divisors (see below), whose sum is σ = 57753000612061. Its totient is φ = 57752985412982.

The previous prime is 57752993012509. The next prime is 57752993012537. The reversal of 57752993012521 is 12521039925775.

The square root of 57752993012521 is 7599539.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 57752993012521 - 2⁹ = 57752993012009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57752993012821) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3799770 + ... + 11399308.

Almost surely, 2^{57752993012521} is an apocalyptic number.

57752993012521 is the 7599539-th square number.

57752993012521 is the 3799770-th centered octagonal number.

It is an amenable number.

57752993012521 is a deficient number, since it is larger than the sum of its proper divisors (7599540).

57752993012521 is an frugal number, since it uses more digits than its factorization.

57752993012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15199078 (or 7599539 counting only the distinct ones).

The product of its (nonzero) digits is 11907000, while the sum is 58.

The spelling of 57752993012521 in words is "fifty-seven trillion, seven hundred fifty-two billion, nine hundred ninety-three million, twelve thousand, five hundred twenty-one".