57021502257255 has 16 divisors (see below), whose sum is σ = 91236211338240. Its totient is φ = 30410865295008.

The previous prime is 57021502257157. The next prime is 57021502257257. The reversal of 57021502257255 is 55275220512075.

It is not a de Polignac number, because 57021502257255 - 2¹⁹ = 57021501732967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57021502257257) 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, 36878175 + ... + 38393264.

It is an arithmetic number, because the mean of its divisors is an integer number (5702263208640).

Almost surely, 2^{57021502257255} is an apocalyptic number.

57021502257255 is a deficient number, since it is larger than the sum of its proper divisors (34214709080985).

57021502257255 is a wasteful number, since it uses less digits than its factorization.

57021502257255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75321950.

The product of its (nonzero) digits is 2450000, while the sum is 48.

The spelling of 57021502257255 in words is "fifty-seven trillion, twenty-one billion, five hundred two million, two hundred fifty-seven thousand, two hundred fifty-five".