252562104521 has 2 divisors, whose sum is σ = 252562104522. Its totient is φ = 252562104520.

The previous prime is 252562104503. The next prime is 252562104547. The reversal of 252562104521 is 125401265252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179776000000 + 72786104521 = 424000^2 + 269789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252562104521 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (252562106521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126281052260 + 126281052261.

It is an arithmetic number, because the mean of its divisors is an integer number (126281052261).

Almost surely, 2^252562104521 is an apocalyptic number.

It is an amenable number.

252562104521 is a deficient number, since it is larger than the sum of its proper divisors (1).

252562104521 is an equidigital number, since it uses as much as digits as its factorization.

252562104521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 252562104521 its reverse (125401265252), we get a palindrome (377963369773).

The spelling of 252562104521 in words is "two hundred fifty-two billion, five hundred sixty-two million, one hundred four thousand, five hundred twenty-one".