116581229 has 2 divisors, whose sum is σ = 116581230. Its totient is φ = 116581228.

The previous prime is 116581193. The next prime is 116581249. The reversal of 116581229 is 922185611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112933129 + 3648100 = 10627^2 + 1910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116581229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116581249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58290614 + 58290615.

It is an arithmetic number, because the mean of its divisors is an integer number (58290615).

Almost surely, 2^116581229 is an apocalyptic number.

It is an amenable number.

116581229 is a deficient number, since it is larger than the sum of its proper divisors (1).

116581229 is an equidigital number, since it uses as much as digits as its factorization.

116581229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 116581229 is about 10797.2787775439. The cubic root of 116581229 is about 488.5130949382.

The spelling of 116581229 in words is "one hundred sixteen million, five hundred eighty-one thousand, two hundred twenty-nine".