252909949 has 2 divisors, whose sum is σ = 252909950. Its totient is φ = 252909948.

The previous prime is 252909941. The next prime is 252909953. The reversal of 252909949 is 949909252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246709849 + 6200100 = 15707^2 + 2490^2 .

It is a cyclic number.

It is not a de Polignac number, because 252909949 - 2³ = 252909941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252909941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126454974 + 126454975.

It is an arithmetic number, because the mean of its divisors is an integer number (126454975).

Almost surely, 2^252909949 is an apocalyptic number.

It is an amenable number.

252909949 is a deficient number, since it is larger than the sum of its proper divisors (1).

252909949 is an equidigital number, since it uses as much as digits as its factorization.

252909949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 252909949 is about 15903.1427397229. The cubic root of 252909949 is about 632.3953064543.

The spelling of 252909949 in words is "two hundred fifty-two million, nine hundred nine thousand, nine hundred forty-nine".