53139931441 has 9 divisors (see below), whose sum is σ = 55042453921. Its totient is φ = 51301065424.

The previous prime is 53139931417. The next prime is 53139931451. The reversal of 53139931441 is 14413993135.

The square root of 53139931441 is 230521.

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

It can be written as a sum of positive squares in 4 ways, for example, as 461041 + 53139470400 = 679^2 + 230520^2 .

It is not a de Polignac number, because 53139931441 - 2¹¹ = 53139929393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53139931451) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6681135 + ... + 6689083.

Almost surely, 2^53139931441 is an apocalyptic number.

53139931441 is the 230521-st square number.

53139931441 is the 115261-st centered octagonal number.

It is an amenable number.

53139931441 is a deficient number, since it is larger than the sum of its proper divisors (1902522480).

53139931441 is an frugal number, since it uses more digits than its factorization.

53139931441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15956 (or 7978 counting only the distinct ones).

The product of its digits is 174960, while the sum is 43.

The spelling of 53139931441 in words is "fifty-three billion, one hundred thirty-nine million, nine hundred thirty-one thousand, four hundred forty-one".