102661651 has 2 divisors, whose sum is σ = 102661652. Its totient is φ = 102661650.

The previous prime is 102661613. The next prime is 102661661. The reversal of 102661651 is 156166201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102661651 - 2¹⁷ = 102530579 is a prime.

It is not a weakly prime, because it can be changed into another prime (102661661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51330825 + 51330826.

It is an arithmetic number, because the mean of its divisors is an integer number (51330826).

Almost surely, 2^102661651 is an apocalyptic number.

102661651 is a deficient number, since it is larger than the sum of its proper divisors (1).

102661651 is an equidigital number, since it uses as much as digits as its factorization.

102661651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 102661651 is about 10132.2085943786. The cubic root of 102661651 is about 468.2409742885.

The spelling of 102661651 in words is "one hundred two million, six hundred sixty-one thousand, six hundred fifty-one".