102661297 has 2 divisors, whose sum is σ = 102661298. Its totient is φ = 102661296.

The previous prime is 102661241. The next prime is 102661309. The reversal of 102661297 is 792166201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88190881 + 14470416 = 9391^2 + 3804^2 .

It is an emirp because it is prime and its reverse (792166201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102661297 is a prime.

It is not a weakly prime, because it can be changed into another prime (102661217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51330648 + 51330649.

It is an arithmetic number, because the mean of its divisors is an integer number (51330649).

Almost surely, 2^102661297 is an apocalyptic number.

It is an amenable number.

102661297 is a deficient number, since it is larger than the sum of its proper divisors (1).

102661297 is an equidigital number, since it uses as much as digits as its factorization.

102661297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 102661297 is about 10132.1911253193. The cubic root of 102661297 is about 468.2404360885.

The spelling of 102661297 in words is "one hundred two million, six hundred sixty-one thousand, two hundred ninety-seven".