116057981 has 4 divisors (see below), whose sum is σ = 124985532. Its totient is φ = 107130432.

The previous prime is 116057957. The next prime is 116057983. The reversal of 116057981 is 189750611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11323225 + 104734756 = 3365^2 + 10234^2 .

It is a cyclic number.

It is not a de Polignac number, because 116057981 - 2⁶ = 116057917 is a prime.

It is a super-2 number, since 2×116057981² = 26938909907592722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116057983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4463756 + ... + 4463781.

It is an arithmetic number, because the mean of its divisors is an integer number (31246383).

Almost surely, 2^116057981 is an apocalyptic number.

It is an amenable number.

116057981 is a deficient number, since it is larger than the sum of its proper divisors (8927551).

116057981 is an equidigital number, since it uses as much as digits as its factorization.

116057981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927550.

The product of its (nonzero) digits is 15120, while the sum is 38.

The square root of 116057981 is about 10773.0209783514. The cubic root of 116057981 is about 487.7811392615.

The spelling of 116057981 in words is "one hundred sixteen million, fifty-seven thousand, nine hundred eighty-one".