115157639 has 2 divisors, whose sum is σ = 115157640. Its totient is φ = 115157638.

The previous prime is 115157621. The next prime is 115157641. The reversal of 115157639 is 936751511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115157639 is a prime.

It is a super-2 number, since 2×115157639² = 26522563640108642, which contains 22 as substring.

Together with 115157641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115157699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57578819 + 57578820.

It is an arithmetic number, because the mean of its divisors is an integer number (57578820).

Almost surely, 2^115157639 is an apocalyptic number.

115157639 is a deficient number, since it is larger than the sum of its proper divisors (1).

115157639 is an equidigital number, since it uses as much as digits as its factorization.

115157639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 38.

The square root of 115157639 is about 10731.1527339797. The cubic root of 115157639 is about 486.5165115566.

The spelling of 115157639 in words is "one hundred fifteen million, one hundred fifty-seven thousand, six hundred thirty-nine".