115854981 has 16 divisors (see below), whose sum is σ = 168810048. Its totient is φ = 70092800.

The previous prime is 115854923. The next prime is 115854997. The reversal of 115854981 is 189458511.

It is a cyclic number.

It is not a de Polignac number, because 115854981 - 2¹⁰ = 115853957 is a prime.

It is a super-2 number, since 2×115854981² = 26844753245020722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115854911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18415 + ... + 23891.

It is an arithmetic number, because the mean of its divisors is an integer number (10550628).

Almost surely, 2^115854981 is an apocalyptic number.

115854981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115854981 is a deficient number, since it is larger than the sum of its proper divisors (52955067).

115854981 is a wasteful number, since it uses less digits than its factorization.

115854981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132.

The product of its digits is 57600, while the sum is 42.

The square root of 115854981 is about 10763.5951707596. The cubic root of 115854981 is about 487.4965764388.

The spelling of 115854981 in words is "one hundred fifteen million, eight hundred fifty-four thousand, nine hundred eighty-one".