102661459 has 2 divisors, whose sum is σ = 102661460. Its totient is φ = 102661458.

The previous prime is 102661457. The next prime is 102661529. The reversal of 102661459 is 954166201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102661459 - 2¹ = 102661457 is a prime.

Together with 102661457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102661451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51330729 + 51330730.

It is an arithmetic number, because the mean of its divisors is an integer number (51330730).

Almost surely, 2^102661459 is an apocalyptic number.

102661459 is a deficient number, since it is larger than the sum of its proper divisors (1).

102661459 is an equidigital number, since it uses as much as digits as its factorization.

102661459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 102661459 is about 10132.1991196383. The cubic root of 102661459 is about 468.2406823836.

The spelling of 102661459 in words is "one hundred two million, six hundred sixty-one thousand, four hundred fifty-nine".