51492255872 has 72 divisors (see below), whose sum is σ = 106162161255. Its totient is φ = 24877098240.

The previous prime is 51492255827. The next prime is 51492255887. The reversal of 51492255872 is 27855229415.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 25746127936 + 25746127936 = 160456^2 + 160456^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=160456.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51492255872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 79585853 + ... + 79586499.

Almost surely, 2^51492255872 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 51492255872

51492255872 is an abundant number, since it is smaller than the sum of its proper divisors (54669905383).

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

51492255872 is an frugal number, since it uses more digits than its factorization.

51492255872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 680 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 50.

Multiplying 51492255872 by its sum of digits (50), we get a square (2574612793600 = 1604560²).

The spelling of 51492255872 in words is "fifty-one billion, four hundred ninety-two million, two hundred fifty-five thousand, eight hundred seventy-two".