51172663301 has 2 divisors, whose sum is σ = 51172663302. Its totient is φ = 51172663300.

The previous prime is 51172663189. The next prime is 51172663303. The reversal of 51172663301 is 10336627115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32663332900 + 18509330401 = 180730^2 + 136049^2 .

It is a cyclic number.

It is not a de Polignac number, because 51172663301 - 2¹⁸ = 51172401157 is a prime.

Together with 51172663303, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51172663303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25586331650 + 25586331651.

It is an arithmetic number, because the mean of its divisors is an integer number (25586331651).

Almost surely, 2^51172663301 is an apocalyptic number.

It is an amenable number.

51172663301 is a deficient number, since it is larger than the sum of its proper divisors (1).

51172663301 is an equidigital number, since it uses as much as digits as its factorization.

51172663301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 51172663301 in words is "fifty-one billion, one hundred seventy-two million, six hundred sixty-three thousand, three hundred one".