115816487 has 2 divisors, whose sum is σ = 115816488. Its totient is φ = 115816486.

The previous prime is 115816451. The next prime is 115816537. The reversal of 115816487 is 784618511.

It is a weak prime.

It is an emirp because it is prime and its reverse (784618511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115816487 - 2²⁶ = 48707623 is a prime.

It is a super-2 number, since 2×115816487² = 26826917322042338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115816447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57908243 + 57908244.

It is an arithmetic number, because the mean of its divisors is an integer number (57908244).

Almost surely, 2^115816487 is an apocalyptic number.

115816487 is a deficient number, since it is larger than the sum of its proper divisors (1).

115816487 is an equidigital number, since it uses as much as digits as its factorization.

115816487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 41.

The square root of 115816487 is about 10761.8068650204. The cubic root of 115816487 is about 487.4425785534.

The spelling of 115816487 in words is "one hundred fifteen million, eight hundred sixteen thousand, four hundred eighty-seven".