252352237519981 has 2 divisors, whose sum is σ = 252352237519982. Its totient is φ = 252352237519980.

The previous prime is 252352237519931. The next prime is 252352237520003. The reversal of 252352237519981 is 189915732253252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251928605763081 + 423631756900 = 15872259^2 + 650870^2 .

It is a cyclic number.

It is not a de Polignac number, because 252352237519981 - 2¹⁵ = 252352237487213 is a prime.

It is a super-2 number, since 2×252352237519981² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252352237519901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126176118759990 + 126176118759991.

It is an arithmetic number, because the mean of its divisors is an integer number (126176118759991).

Almost surely, 2^{252352237519981} is an apocalyptic number.

It is an amenable number.

252352237519981 is a deficient number, since it is larger than the sum of its proper divisors (1).

252352237519981 is an equidigital number, since it uses as much as digits as its factorization.

252352237519981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648000, while the sum is 64.

The spelling of 252352237519981 in words is "two hundred fifty-two trillion, three hundred fifty-two billion, two hundred thirty-seven million, five hundred nineteen thousand, nine hundred eighty-one".