51163273249 has 9 divisors (see below), whose sum is σ = 56240051889. Its totient is φ = 46509804660.

The previous prime is 51163273223. The next prime is 51163273279. The reversal of 51163273249 is 94237236115.

The square root of 51163273249 is 226193.

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

It is not a de Polignac number, because 51163273249 - 2²¹ = 51161176097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51163273279) 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, 2477842 + ... + 2498404.

Almost surely, 2^51163273249 is an apocalyptic number.

51163273249 is the 226193-rd square number.

51163273249 is the 113097-th centered octagonal number.

It is an amenable number.

51163273249 is a deficient number, since it is larger than the sum of its proper divisors (5076778640).

51163273249 is an frugal number, since it uses more digits than its factorization.

51163273249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41148 (or 20574 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The spelling of 51163273249 in words is "fifty-one billion, one hundred sixty-three million, two hundred seventy-three thousand, two hundred forty-nine".