115615651 has 2 divisors, whose sum is σ = 115615652. Its totient is φ = 115615650.

The previous prime is 115615649. The next prime is 115615667. The reversal of 115615651 is 156516511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115615651 - 2¹ = 115615649 is a prime.

Together with 115615649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (115615681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57807825 + 57807826.

It is an arithmetic number, because the mean of its divisors is an integer number (57807826).

Almost surely, 2^115615651 is an apocalyptic number.

115615651 is a deficient number, since it is larger than the sum of its proper divisors (1).

115615651 is an equidigital number, since it uses as much as digits as its factorization.

115615651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 31.

The square root of 115615651 is about 10752.4718553456. The cubic root of 115615651 is about 487.1606593967.

It can be divided in two parts, 1156 and 15651, that added together give a 5-th power (16807 = 7⁵).

The spelling of 115615651 in words is "one hundred fifteen million, six hundred fifteen thousand, six hundred fifty-one".