51267374929 has 27 divisors (see below), whose sum is σ = 57559811601. Its totient is φ = 45646876800.

The previous prime is 51267374887. The next prime is 51267374957. The reversal of 51267374929 is 92947376215.

The square root of 51267374929 is 226423.

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 21320380225 + 29946994704 = 146015^2 + 173052^2 .

It is not a de Polignac number, because 51267374929 - 2¹¹ = 51267372881 is a prime.

It is a super-2 number, since 2×51267374929² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51267374929.

It is not an unprimeable number, because it can be changed into a prime (51267374989) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 73134279 + ... + 73134979.

Almost surely, 2^51267374929 is an apocalyptic number.

51267374929 is the 226423-rd square number.

51267374929 is the 113212-nd centered octagonal number.

It is an amenable number.

51267374929 is a deficient number, since it is larger than the sum of its proper divisors (6292436672).

51267374929 is an frugal number, since it uses more digits than its factorization.

51267374929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 737 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 55.

The spelling of 51267374929 in words is "fifty-one billion, two hundred sixty-seven million, three hundred seventy-four thousand, nine hundred twenty-nine".