197515249 has 2 divisors, whose sum is σ = 197515250. Its totient is φ = 197515248.

The previous prime is 197515243. The next prime is 197515271. The reversal of 197515249 is 942515791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175827600 + 21687649 = 13260^2 + 4657^2 .

It is a cyclic number.

It is not a de Polignac number, because 197515249 - 2⁵ = 197515217 is a prime.

It is not a weakly prime, because it can be changed into another prime (197515243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98757624 + 98757625.

It is an arithmetic number, because the mean of its divisors is an integer number (98757625).

Almost surely, 2^197515249 is an apocalyptic number.

It is an amenable number.

197515249 is a deficient number, since it is larger than the sum of its proper divisors (1).

197515249 is an equidigital number, since it uses as much as digits as its factorization.

197515249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 43.

The square root of 197515249 is about 14054.0118471560. The cubic root of 197515249 is about 582.3716298135.

The spelling of 197515249 in words is "one hundred ninety-seven million, five hundred fifteen thousand, two hundred forty-nine".