51538534441 has 9 divisors (see below), whose sum is σ = 51761291421. Its totient is φ = 51316734924.

The previous prime is 51538534429. The next prime is 51538534511. The reversal of 51538534441 is 14443583515.

The square root of 51538534441 is 227021.

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

It is not a de Polignac number, because 51538534441 - 2²⁹ = 51001663529 is a prime.

It is a super-2 number, since 2×51538534441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51538534841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 86040660 + ... + 86041258.

Almost surely, 2^51538534441 is an apocalyptic number.

51538534441 is the 227021-st square number.

51538534441 is the 113511-st centered octagonal number.

It is an amenable number.

51538534441 is a deficient number, since it is larger than the sum of its proper divisors (222756980).

51538534441 is an frugal number, since it uses more digits than its factorization.

51538534441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 978 counting only the distinct ones).

The product of its digits is 576000, while the sum is 43.

The spelling of 51538534441 in words is "fifty-one billion, five hundred thirty-eight million, five hundred thirty-four thousand, four hundred forty-one".