252189901 has 2 divisors, whose sum is σ = 252189902. Its totient is φ = 252189900.

The previous prime is 252189863. The next prime is 252189919. The reversal of 252189901 is 109981252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244953801 + 7236100 = 15651^2 + 2690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252189901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252189701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126094950 + 126094951.

It is an arithmetic number, because the mean of its divisors is an integer number (126094951).

Almost surely, 2^252189901 is an apocalyptic number.

It is an amenable number.

252189901 is a deficient number, since it is larger than the sum of its proper divisors (1).

252189901 is an equidigital number, since it uses as much as digits as its factorization.

252189901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 252189901 is about 15880.4880592506. The cubic root of 252189901 is about 631.7945817008.

The spelling of 252189901 in words is "two hundred fifty-two million, one hundred eighty-nine thousand, nine hundred one".