252436949 has 2 divisors, whose sum is σ = 252436950. Its totient is φ = 252436948.

The previous prime is 252436889. The next prime is 252436969. The reversal of 252436949 is 949634252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221712100 + 30724849 = 14890^2 + 5543^2 .

It is a cyclic number.

It is not a de Polignac number, because 252436949 - 2⁸ = 252436693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252436969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126218474 + 126218475.

It is an arithmetic number, because the mean of its divisors is an integer number (126218475).

Almost surely, 2^252436949 is an apocalyptic number.

It is an amenable number.

252436949 is a deficient number, since it is larger than the sum of its proper divisors (1).

252436949 is an equidigital number, since it uses as much as digits as its factorization.

252436949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 252436949 is about 15888.2645056029. The cubic root of 252436949 is about 632.0008186778. Note that the first 3 decimals are identical.

The spelling of 252436949 in words is "two hundred fifty-two million, four hundred thirty-six thousand, nine hundred forty-nine".