252246581 has 2 divisors, whose sum is σ = 252246582. Its totient is φ = 252246580.

The previous prime is 252246571. The next prime is 252246587. The reversal of 252246581 is 185642252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225300100 + 26946481 = 15010^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 252246581 - 2¹⁰ = 252245557 is a prime.

It is a super-2 number, since 2×252246581² = 127256675252379122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252246587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126123290 + 126123291.

It is an arithmetic number, because the mean of its divisors is an integer number (126123291).

Almost surely, 2^252246581 is an apocalyptic number.

It is an amenable number.

252246581 is a deficient number, since it is larger than the sum of its proper divisors (1).

252246581 is an equidigital number, since it uses as much as digits as its factorization.

252246581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 35.

The square root of 252246581 is about 15882.2725389032. The cubic root of 252246581 is about 631.8419103663.

The spelling of 252246581 in words is "two hundred fifty-two million, two hundred forty-six thousand, five hundred eighty-one".