115951 has 8 divisors (see below), whose sum is σ = 129024. Its totient is φ = 103320.

The previous prime is 115933. The next prime is 115963. The reversal of 115951 is 159511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115951 - 2⁷ = 115823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850 + ... + 976.

It is an arithmetic number, because the mean of its divisors is an integer number (16128).

2¹¹⁵⁹⁵¹ is an apocalyptic number.

115951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115951 is a deficient number, since it is larger than the sum of its proper divisors (13073).

115951 is a wasteful number, since it uses less digits than its factorization.

115951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221.

The product of its digits is 225, while the sum is 22.

The square root of 115951 is about 340.5157852435. The cubic root of 115951 is about 48.7631216048.

The spelling of 115951 in words is "one hundred fifteen thousand, nine hundred fifty-one".