115901 has 2 divisors, whose sum is σ = 115902. Its totient is φ = 115900.

The previous prime is 115891. The next prime is 115903. The reversal of 115901 is 109511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63001 + 52900 = 251^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 115901 - 2⁶ = 115837 is a prime.

It is a super-3 number, since 3×115901³ = 4670708933333103, which contains 333 as substring.

Together with 115903, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57950 + 57951.

It is an arithmetic number, because the mean of its divisors is an integer number (57951).

2¹¹⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

115901 is a deficient number, since it is larger than the sum of its proper divisors (1).

115901 is an equidigital number, since it uses as much as digits as its factorization.

115901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 115901 is about 340.4423592916. The cubic root of 115901 is about 48.7561114407.

The spelling of 115901 in words is "one hundred fifteen thousand, nine hundred one".