53940991504 has 45 divisors (see below), whose sum is σ = 108048422349. Its totient is φ = 26086544640.

The previous prime is 53940991453. The next prime is 53940991513. The reversal of 53940991504 is 40519904935.

The square root of 53940991504 is 232252.

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

It can be written as a sum of positive squares in only one way, i.e., 1430352400 + 52510639104 = 37820^2 + 229152^2 .

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, 28798312 + ... + 28800184.

Almost surely, 2^53940991504 is an apocalyptic number.

53940991504 is the 232252-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53940991504

53940991504 is an abundant number, since it is smaller than the sum of its proper divisors (54107430845).

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

53940991504 is an frugal number, since it uses more digits than its factorization.

53940991504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 49.

Multiplying 53940991504 by its sum of digits (49), we get a square (2643108583696 = 1625764²).

The spelling of 53940991504 in words is "fifty-three billion, nine hundred forty million, nine hundred ninety-one thousand, five hundred four".