52501931689 has 3 divisors (see below), whose sum is σ = 52502160823. Its totient is φ = 52501702556.

The previous prime is 52501931687. The next prime is 52501931693. The reversal of 52501931689 is 98613910525.

The square root of 52501931689 is 229133.

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 can be written as a sum of positive squares in only one way, i.e., 12545120025 + 39956811664 = 112005^2 + 199892^2 .

It is not a de Polignac number, because 52501931689 - 2¹ = 52501931687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52501931683) 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, 114567 + ... + 343699.

Almost surely, 2^52501931689 is an apocalyptic number.

52501931689 is the 229133-rd square number.

52501931689 is the 114567-th centered octagonal number.

It is an amenable number.

52501931689 is a deficient number, since it is larger than the sum of its proper divisors (229134).

52501931689 is an frugal number, since it uses more digits than its factorization.

52501931689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458266 (or 229133 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 49.

Multiplying 52501931689 by its sum of digits (49), we get a square (2572594652761 = 1603931²).

The spelling of 52501931689 in words is "fifty-two billion, five hundred one million, nine hundred thirty-one thousand, six hundred eighty-nine".