252286919581 has 2 divisors, whose sum is σ = 252286919582. Its totient is φ = 252286919580.

The previous prime is 252286919543. The next prime is 252286919617. The reversal of 252286919581 is 185919682252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242428216900 + 9858702681 = 492370^2 + 99291^2 .

It is a cyclic number.

It is not a de Polignac number, because 252286919581 - 2³³ = 243696984989 is a prime.

It is a super-2 number, since 2×252286919581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252286919881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126143459790 + 126143459791.

It is an arithmetic number, because the mean of its divisors is an integer number (126143459791).

Almost surely, 2^252286919581 is an apocalyptic number.

It is an amenable number.

252286919581 is a deficient number, since it is larger than the sum of its proper divisors (1).

252286919581 is an equidigital number, since it uses as much as digits as its factorization.

252286919581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 58.

The spelling of 252286919581 in words is "two hundred fifty-two billion, two hundred eighty-six million, nine hundred nineteen thousand, five hundred eighty-one".