116412581 has 2 divisors, whose sum is σ = 116412582. Its totient is φ = 116412580.

The previous prime is 116412577. The next prime is 116412631. The reversal of 116412581 is 185214611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113081956 + 3330625 = 10634^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 116412581 - 2² = 116412577 is a prime.

It is a super-2 number, since 2×116412581² = 27103778030163122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116412511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58206290 + 58206291.

It is an arithmetic number, because the mean of its divisors is an integer number (58206291).

Almost surely, 2^116412581 is an apocalyptic number.

It is an amenable number.

116412581 is a deficient number, since it is larger than the sum of its proper divisors (1).

116412581 is an equidigital number, since it uses as much as digits as its factorization.

116412581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 29.

The square root of 116412581 is about 10789.4662055173. The cubic root of 116412581 is about 488.2774180161.

The spelling of 116412581 in words is "one hundred sixteen million, four hundred twelve thousand, five hundred eighty-one".