102566393 has 2 divisors, whose sum is σ = 102566394. Its totient is φ = 102566392.

The previous prime is 102566377. The next prime is 102566413. The reversal of 102566393 is 393665201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94225849 + 8340544 = 9707^2 + 2888^2 .

It is an emirp because it is prime and its reverse (393665201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102566393 - 2⁴ = 102566377 is a prime.

It is not a weakly prime, because it can be changed into another prime (102566333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51283196 + 51283197.

It is an arithmetic number, because the mean of its divisors is an integer number (51283197).

Almost surely, 2^102566393 is an apocalyptic number.

It is an amenable number.

102566393 is a deficient number, since it is larger than the sum of its proper divisors (1).

102566393 is an equidigital number, since it uses as much as digits as its factorization.

102566393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 102566393 is about 10127.5067514172. The cubic root of 102566393 is about 468.0961051932.

The spelling of 102566393 in words is "one hundred two million, five hundred sixty-six thousand, three hundred ninety-three".