102509887 has 2 divisors, whose sum is σ = 102509888. Its totient is φ = 102509886.

The previous prime is 102509879. The next prime is 102509923. The reversal of 102509887 is 788905201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102509887 - 2³ = 102509879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102509837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51254943 + 51254944.

It is an arithmetic number, because the mean of its divisors is an integer number (51254944).

Almost surely, 2^102509887 is an apocalyptic number.

102509887 is a deficient number, since it is larger than the sum of its proper divisors (1).

102509887 is an equidigital number, since it uses as much as digits as its factorization.

102509887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 102509887 is about 10124.7166380102. The cubic root of 102509887 is about 468.0101280468.

The spelling of 102509887 in words is "one hundred two million, five hundred nine thousand, eight hundred eighty-seven".