51875528644 has 27 divisors (see below), whose sum is σ = 92793104047. Its totient is φ = 25375419944.

The previous prime is 51875528633. The next prime is 51875528671. The reversal of 51875528644 is 44682557815.

The square root of 51875528644 is 227762.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21408417 + ... + 21410839.

Almost surely, 2^51875528644 is an apocalyptic number.

51875528644 is the 227762-nd square number.

It is an amenable number.

51875528644 is a deficient number, since it is larger than the sum of its proper divisors (40917575403).

51875528644 is an frugal number, since it uses more digits than its factorization.

51875528644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944 (or 2472 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 55.

The spelling of 51875528644 in words is "fifty-one billion, eight hundred seventy-five million, five hundred twenty-eight thousand, six hundred forty-four".