102508397 has 4 divisors (see below), whose sum is σ = 102683616. Its totient is φ = 102333180.

The previous prime is 102508391. The next prime is 102508423. The reversal of 102508397 is 793805201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 793805201 = 7 ⋅113400743.

It is a cyclic number.

It is not a de Polignac number, because 102508397 - 2⁸ = 102508141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102508391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86729 + ... + 87902.

It is an arithmetic number, because the mean of its divisors is an integer number (25670904).

Almost surely, 2^102508397 is an apocalyptic number.

It is an amenable number.

102508397 is a deficient number, since it is larger than the sum of its proper divisors (175219).

102508397 is an equidigital number, since it uses as much as digits as its factorization.

102508397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175218.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 102508397 is about 10124.6430554366. The cubic root of 102508397 is about 468.0078604982.

The spelling of 102508397 in words is "one hundred two million, five hundred eight thousand, three hundred ninety-seven".