102156259 has 2 divisors, whose sum is σ = 102156260. Its totient is φ = 102156258.

The previous prime is 102156233. The next prime is 102156269. The reversal of 102156259 is 952651201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102156259 - 2⁵ = 102156227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102156259.

It is not a weakly prime, because it can be changed into another prime (102156269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51078129 + 51078130.

It is an arithmetic number, because the mean of its divisors is an integer number (51078130).

Almost surely, 2^102156259 is an apocalyptic number.

102156259 is a deficient number, since it is larger than the sum of its proper divisors (1).

102156259 is an equidigital number, since it uses as much as digits as its factorization.

102156259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 102156259 is about 10107.2379510923. The cubic root of 102156259 is about 467.4713437209.

The spelling of 102156259 in words is "one hundred two million, one hundred fifty-six thousand, two hundred fifty-nine".