102497245 has 4 divisors (see below), whose sum is σ = 122996700. Its totient is φ = 81997792.

The previous prime is 102497237. The next prime is 102497261. The reversal of 102497245 is 542794201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47692836 + 54804409 = 6906^2 + 7403^2 .

It is a cyclic number.

It is not a de Polignac number, because 102497245 - 2³ = 102497237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102497245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10249720 + ... + 10249729.

It is an arithmetic number, because the mean of its divisors is an integer number (30749175).

Almost surely, 2^102497245 is an apocalyptic number.

It is an amenable number.

102497245 is a deficient number, since it is larger than the sum of its proper divisors (20499455).

102497245 is an equidigital number, since it uses as much as digits as its factorization.

102497245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20499454.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 102497245 is about 10124.0923049921. The cubic root of 102497245 is about 467.9908881880.

The spelling of 102497245 in words is "one hundred two million, four hundred ninety-seven thousand, two hundred forty-five".