51325202833921 has 9 divisors (see below), whose sum is σ = 51611638095849. Its totient is φ = 51040348628400.

The previous prime is 51325202833913. The next prime is 51325202833979. The reversal of 51325202833921 is 12933820252315.

The square root of 51325202833921 is 7164161.

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 11667956073921 + 39657246760000 = 3415839^2 + 6297400^2 .

It is not a de Polignac number, because 51325202833921 - 2³ = 51325202833913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51325202833981) 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, 1296693351 + ... + 1296732931.

Almost surely, 2^{51325202833921} is an apocalyptic number.

51325202833921 is the 7164161-st square number.

51325202833921 is the 3582081-st centered octagonal number.

It is an amenable number.

51325202833921 is a deficient number, since it is larger than the sum of its proper divisors (286435261928).

51325202833921 is an frugal number, since it uses more digits than its factorization.

51325202833921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79524 (or 39762 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 51325202833921 in words is "fifty-one trillion, three hundred twenty-five billion, two hundred two million, eight hundred thirty-three thousand, nine hundred twenty-one".