115538651 has 2 divisors, whose sum is σ = 115538652. Its totient is φ = 115538650.

The previous prime is 115538617. The next prime is 115538653. The reversal of 115538651 is 156835511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115538651 - 2⁶ = 115538587 is a prime.

It is a Sophie Germain prime.

Together with 115538653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115538653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57769325 + 57769326.

It is an arithmetic number, because the mean of its divisors is an integer number (57769326).

Almost surely, 2^115538651 is an apocalyptic number.

115538651 is a deficient number, since it is larger than the sum of its proper divisors (1).

115538651 is an equidigital number, since it uses as much as digits as its factorization.

115538651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 35.

The square root of 115538651 is about 10748.8906869500. The cubic root of 115538651 is about 487.0524857453.

The spelling of 115538651 in words is "one hundred fifteen million, five hundred thirty-eight thousand, six hundred fifty-one".