252181374701 has 2 divisors, whose sum is σ = 252181374702. Its totient is φ = 252181374700.

The previous prime is 252181374647. The next prime is 252181374737. The reversal of 252181374701 is 107473181252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252103405801 + 77968900 = 502099^2 + 8830^2 .

It is a cyclic number.

It is not a de Polignac number, because 252181374701 - 2²² = 252177180397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252181374301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126090687350 + 126090687351.

It is an arithmetic number, because the mean of its divisors is an integer number (126090687351).

Almost surely, 2^252181374701 is an apocalyptic number.

It is an amenable number.

252181374701 is a deficient number, since it is larger than the sum of its proper divisors (1).

252181374701 is an equidigital number, since it uses as much as digits as its factorization.

252181374701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 252181374701 in words is "two hundred fifty-two billion, one hundred eighty-one million, three hundred seventy-four thousand, seven hundred one".