115597651 has 4 divisors (see below), whose sum is σ = 124489792. Its totient is φ = 106705512.

The previous prime is 115597649. The next prime is 115597679. The reversal of 115597651 is 156795511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156795511 = 1031 ⋅152081.

It is a cyclic number.

It is not a de Polignac number, because 115597651 - 2¹ = 115597649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115597681) 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, 4446051 + ... + 4446076.

It is an arithmetic number, because the mean of its divisors is an integer number (31122448).

Almost surely, 2^115597651 is an apocalyptic number.

115597651 is a deficient number, since it is larger than the sum of its proper divisors (8892141).

115597651 is an equidigital number, since it uses as much as digits as its factorization.

115597651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8892140.

The product of its digits is 47250, while the sum is 40.

The square root of 115597651 is about 10751.6348059260. The cubic root of 115597651 is about 487.1353763521.

The spelling of 115597651 in words is "one hundred fifteen million, five hundred ninety-seven thousand, six hundred fifty-one".