116581249 has 2 divisors, whose sum is σ = 116581250. Its totient is φ = 116581248.

The previous prime is 116581229. The next prime is 116581253. The reversal of 116581249 is 942185611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111091600 + 5489649 = 10540^2 + 2343^2 .

It is a cyclic number.

It is not a de Polignac number, because 116581249 - 2¹¹ = 116579201 is a prime.

It is not a weakly prime, because it can be changed into another prime (116581229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58290624 + 58290625.

It is an arithmetic number, because the mean of its divisors is an integer number (58290625).

Almost surely, 2^116581249 is an apocalyptic number.

It is an amenable number.

116581249 is a deficient number, since it is larger than the sum of its proper divisors (1).

116581249 is an equidigital number, since it uses as much as digits as its factorization.

116581249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 116581249 is about 10797.2797037032. The cubic root of 116581249 is about 488.5131228737.

The spelling of 116581249 in words is "one hundred sixteen million, five hundred eighty-one thousand, two hundred forty-nine".