115061591 has 2 divisors, whose sum is σ = 115061592. Its totient is φ = 115061590.

The previous prime is 115061581. The next prime is 115061629. The reversal of 115061591 is 195160511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115061591 - 2²⁶ = 47952727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115061501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57530795 + 57530796.

It is an arithmetic number, because the mean of its divisors is an integer number (57530796).

Almost surely, 2^115061591 is an apocalyptic number.

115061591 is a deficient number, since it is larger than the sum of its proper divisors (1).

115061591 is an equidigital number, since it uses as much as digits as its factorization.

115061591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 29.

The square root of 115061591 is about 10726.6766055475. The cubic root of 115061591 is about 486.3812131492.

The spelling of 115061591 in words is "one hundred fifteen million, sixty-one thousand, five hundred ninety-one".