102257291 has 2 divisors, whose sum is σ = 102257292. Its totient is φ = 102257290.

The previous prime is 102257279. The next prime is 102257327. The reversal of 102257291 is 192752201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102257291 - 2¹⁰ = 102256267 is a prime.

It is not a weakly prime, because it can be changed into another prime (102257231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51128645 + 51128646.

It is an arithmetic number, because the mean of its divisors is an integer number (51128646).

Almost surely, 2^102257291 is an apocalyptic number.

102257291 is a deficient number, since it is larger than the sum of its proper divisors (1).

102257291 is an equidigital number, since it uses as much as digits as its factorization.

102257291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 102257291 is about 10112.2347183993. The cubic root of 102257291 is about 467.6254018402.

The spelling of 102257291 in words is "one hundred two million, two hundred fifty-seven thousand, two hundred ninety-one".