51924281161 has 3 divisors (see below), whose sum is σ = 51924509031. Its totient is φ = 51924053292.

The previous prime is 51924281159. The next prime is 51924281191. The reversal of 51924281161 is 16118242915.

The square root of 51924281161 is 227869.

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 can be written as a sum of positive squares in only one way, i.e., 1272277561 + 50652003600 = 35669^2 + 225060^2 .

It is not a de Polignac number, because 51924281161 - 2¹ = 51924281159 is a prime.

It is a super-2 number, since 2×51924281161² (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 (51924281131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 113935 + ... + 341803.

It is an arithmetic number, because the mean of its divisors is an integer number (17308169677).

Almost surely, 2^51924281161 is an apocalyptic number.

51924281161 is the 227869-th square number.

51924281161 is the 113935-th centered octagonal number.

It is an amenable number.

51924281161 is a deficient number, since it is larger than the sum of its proper divisors (227870).

51924281161 is an frugal number, since it uses more digits than its factorization.

51924281161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455738 (or 227869 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The spelling of 51924281161 in words is "fifty-one billion, nine hundred twenty-four million, two hundred eighty-one thousand, one hundred sixty-one".