115851 has 12 divisors (see below), whose sum is σ = 163688. Its totient is φ = 72864.

The previous prime is 115849. The next prime is 115853. The reversal of 115851 is 158511.

It is an interprime number because it is at equal distance from previous prime (115849) and next prime (115853).

It is not a de Polignac number, because 115851 - 2¹ = 115849 is a prime.

It is a Duffinian number.

115851 is a modest number, since divided by 851 gives 115 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 115851.

It is not an unprimeable number, because it can be changed into a prime (115853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1551 + ... + 1623.

2¹¹⁵⁸⁵¹ is an apocalyptic number.

115851 is a deficient number, since it is larger than the sum of its proper divisors (47837).

115851 is an equidigital number, since it uses as much as digits as its factorization.

115851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 99 counting only the distinct ones).

The product of its digits is 200, while the sum is 21.

The square root of 115851 is about 340.3689174998. The cubic root of 115851 is about 48.7490992601.

The spelling of 115851 in words is "one hundred fifteen thousand, eight hundred fifty-one".