102252257 has 2 divisors, whose sum is σ = 102252258. Its totient is φ = 102252256.

The previous prime is 102252239. The next prime is 102252277. The reversal of 102252257 is 752252201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84070561 + 18181696 = 9169^2 + 4264^2 .

It is a cyclic number.

It is not a de Polignac number, because 102252257 - 2¹⁴ = 102235873 is a prime.

It is not a weakly prime, because it can be changed into another prime (102252277) 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, 51126128 + 51126129.

It is an arithmetic number, because the mean of its divisors is an integer number (51126129).

Almost surely, 2^102252257 is an apocalyptic number.

It is an amenable number.

102252257 is a deficient number, since it is larger than the sum of its proper divisors (1).

102252257 is an equidigital number, since it uses as much as digits as its factorization.

102252257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 102252257 is about 10111.9858089299. The cubic root of 102252257 is about 467.6177281742.

The spelling of 102252257 in words is "one hundred two million, two hundred fifty-two thousand, two hundred fifty-seven".