51457106775572 has 72 divisors (see below), whose sum is σ = 92913591932280. Its totient is φ = 24934862684160.

The previous prime is 51457106775553. The next prime is 51457106775593. The reversal of 51457106775572 is 27557760175415.

It can be written as a sum of positive squares in 12 ways, for example, as 6030531249796 + 45426575525776 = 2455714^2 + 6739924^2 .

It is a congruent number.

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, 1818965204 + ... + 1818993492.

It is an arithmetic number, because the mean of its divisors is an integer number (1290466554615).

Almost surely, 2^{51457106775572} is an apocalyptic number.

It is an amenable number.

51457106775572 is a deficient number, since it is larger than the sum of its proper divisors (41456485156708).

51457106775572 is a wasteful number, since it uses less digits than its factorization.

51457106775572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29661 (or 29622 counting only the distinct ones).

The product of its (nonzero) digits is 72030000, while the sum is 62.

The spelling of 51457106775572 in words is "fifty-one trillion, four hundred fifty-seven billion, one hundred six million, seven hundred seventy-five thousand, five hundred seventy-two".