252519901 has 2 divisors, whose sum is σ = 252519902. Its totient is φ = 252519900.

The previous prime is 252519859. The next prime is 252519913. The reversal of 252519901 is 109915252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187717401 + 64802500 = 13701^2 + 8050^2 .

It is a cyclic number.

It is not a de Polignac number, because 252519901 - 2²¹ = 250422749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252519961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126259950 + 126259951.

It is an arithmetic number, because the mean of its divisors is an integer number (126259951).

Almost surely, 2^252519901 is an apocalyptic number.

It is an amenable number.

252519901 is a deficient number, since it is larger than the sum of its proper divisors (1).

252519901 is an equidigital number, since it uses as much as digits as its factorization.

252519901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 252519901 is about 15890.8747713900. The cubic root of 252519901 is about 632.0700372698.

The spelling of 252519901 in words is "two hundred fifty-two million, five hundred nineteen thousand, nine hundred one".