102261251 has 2 divisors, whose sum is σ = 102261252. Its totient is φ = 102261250.

The previous prime is 102261227. The next prime is 102261253. The reversal of 102261251 is 152162201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102261251 - 2²⁶ = 35152387 is a prime.

Together with 102261253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102261253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51130625 + 51130626.

It is an arithmetic number, because the mean of its divisors is an integer number (51130626).

Almost surely, 2^102261251 is an apocalyptic number.

102261251 is a deficient number, since it is larger than the sum of its proper divisors (1).

102261251 is an equidigital number, since it uses as much as digits as its factorization.

102261251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 102261251 is about 10112.4305189208. The cubic root of 102261251 is about 467.6314381586.

The spelling of 102261251 in words is "one hundred two million, two hundred sixty-one thousand, two hundred fifty-one".