252809273 has 2 divisors, whose sum is σ = 252809274. Its totient is φ = 252809272.

The previous prime is 252809267. The next prime is 252809339. The reversal of 252809273 is 372908252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186923584 + 65885689 = 13672^2 + 8117^2 .

It is a cyclic number.

It is not a de Polignac number, because 252809273 - 2⁶ = 252809209 is a prime.

It is not a weakly prime, because it can be changed into another prime (252809213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126404636 + 126404637.

It is an arithmetic number, because the mean of its divisors is an integer number (126404637).

Almost surely, 2^252809273 is an apocalyptic number.

It is an amenable number.

252809273 is a deficient number, since it is larger than the sum of its proper divisors (1).

252809273 is an equidigital number, since it uses as much as digits as its factorization.

252809273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 252809273 is about 15899.9771383483. The cubic root of 252809273 is about 632.3113826704.

The spelling of 252809273 in words is "two hundred fifty-two million, eight hundred nine thousand, two hundred seventy-three".