102530197 has 18 divisors (see below), whose sum is σ = 131105814. Its totient is φ = 79889040.

The previous prime is 102530123. The next prime is 102530201. The reversal of 102530197 is 791035201.

It can be written as a sum of positive squares in only one way, i.e., 61685316 + 40844881 = 7854^2 + 6391^2 .

It is a de Polignac number, because none of the positive numbers 2^k-102530197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102530107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2718 + ... + 14575.

Almost surely, 2^102530197 is an apocalyptic number.

It is an amenable number.

102530197 is a deficient number, since it is larger than the sum of its proper divisors (28575617).

102530197 is a wasteful number, since it uses less digits than its factorization.

102530197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17329 (or 17311 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 102530197 is about 10125.7195793682. The cubic root of 102530197 is about 468.0410345226.

Adding to 102530197 its reverse (791035201), we get a palindrome (893565398).

The spelling of 102530197 in words is "one hundred two million, five hundred thirty thousand, one hundred ninety-seven".