252705949 has 2 divisors, whose sum is σ = 252705950. Its totient is φ = 252705948.

The previous prime is 252705941. The next prime is 252705989. The reversal of 252705949 is 949507252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248220025 + 4485924 = 15755^2 + 2118^2 .

It is a cyclic number.

It is not a de Polignac number, because 252705949 - 2³ = 252705941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252705941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126352974 + 126352975.

It is an arithmetic number, because the mean of its divisors is an integer number (126352975).

Almost surely, 2^252705949 is an apocalyptic number.

It is an amenable number.

252705949 is a deficient number, since it is larger than the sum of its proper divisors (1).

252705949 is an equidigital number, since it uses as much as digits as its factorization.

252705949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 252705949 is about 15896.7276192303. The cubic root of 252705949 is about 632.2252283360.

The spelling of 252705949 in words is "two hundred fifty-two million, seven hundred five thousand, nine hundred forty-nine".