54431357373121 has 3 divisors (see below), whose sum is σ = 54431364750883. Its totient is φ = 54431349995360.

The previous prime is 54431357373079. The next prime is 54431357373163. The reversal of 54431357373121 is 12137375313445.

The square root of 54431357373121 is 7377761.

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 is an interprime number because it is at equal distance from previous prime (54431357373079) and next prime (54431357373163).

It can be written as a sum of positive squares in only one way, i.e., 1158875933121 + 53272481440000 = 1076511^2 + 7298800^2 .

It is not a de Polignac number, because 54431357373121 - 2⁷ = 54431357372993 is a prime.

It is a super-2 number, since 2×54431357373121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54431357373221) 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, 3688881 + ... + 11066641.

Almost surely, 2^{54431357373121} is an apocalyptic number.

54431357373121 is the 7377761-st square number.

54431357373121 is the 3688881-st centered octagonal number.

It is an amenable number.

54431357373121 is a deficient number, since it is larger than the sum of its proper divisors (7377762).

54431357373121 is an frugal number, since it uses more digits than its factorization.

54431357373121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14755522 (or 7377761 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 49.

The spelling of 54431357373121 in words is "fifty-four trillion, four hundred thirty-one billion, three hundred fifty-seven million, three hundred seventy-three thousand, one hundred twenty-one".