102897517 has 2 divisors, whose sum is σ = 102897518. Its totient is φ = 102897516.

The previous prime is 102897479. The next prime is 102897547. The reversal of 102897517 is 715798201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80892036 + 22005481 = 8994^2 + 4691^2 .

It is an emirp because it is prime and its reverse (715798201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102897517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102897517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102897547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51448758 + 51448759.

It is an arithmetic number, because the mean of its divisors is an integer number (51448759).

Almost surely, 2^102897517 is an apocalyptic number.

It is an amenable number.

102897517 is a deficient number, since it is larger than the sum of its proper divisors (1).

102897517 is an equidigital number, since it uses as much as digits as its factorization.

102897517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 102897517 is about 10143.8413335383. The cubic root of 102897517 is about 468.5992958616.

The spelling of 102897517 in words is "one hundred two million, eight hundred ninety-seven thousand, five hundred seventeen".