115199997 has 16 divisors (see below), whose sum is σ = 169051968. Its totient is φ = 69198080.

The previous prime is 115199957. The next prime is 115200017. The reversal of 115199997 is 799991511.

It is a cyclic number.

It is not a de Polignac number, because 115199997 - 2¹¹ = 115197949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115199927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11718 + ... + 19175.

It is an arithmetic number, because the mean of its divisors is an integer number (10565748).

Almost surely, 2^115199997 is an apocalyptic number.

It is an amenable number.

115199997 is a deficient number, since it is larger than the sum of its proper divisors (53851971).

115199997 is a wasteful number, since it uses less digits than its factorization.

115199997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31020.

The product of its digits is 229635, while the sum is 51.

The square root of 115199997 is about 10733.1261522447. The cubic root of 115199997 is about 486.5761554221.

The spelling of 115199997 in words is "one hundred fifteen million, one hundred ninety-nine thousand, nine hundred ninety-seven".