252661433 has 2 divisors, whose sum is σ = 252661434. Its totient is φ = 252661432.

The previous prime is 252661399. The next prime is 252661469. The reversal of 252661433 is 334166252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252587449 + 73984 = 15893^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 252661433 - 2⁸ = 252661177 is a prime.

It is a super-2 number, since 2×252661433² = 127675599451226978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252661433.

It is not a weakly prime, because it can be changed into another prime (252660433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126330716 + 126330717.

It is an arithmetic number, because the mean of its divisors is an integer number (126330717).

Almost surely, 2^252661433 is an apocalyptic number.

It is an amenable number.

252661433 is a deficient number, since it is larger than the sum of its proper divisors (1).

252661433 is an equidigital number, since it uses as much as digits as its factorization.

252661433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 252661433 is about 15895.3273951813. The cubic root of 252661433 is about 632.1881024576.

The spelling of 252661433 in words is "two hundred fifty-two million, six hundred sixty-one thousand, four hundred thirty-three".