116565601 has 2 divisors, whose sum is σ = 116565602. Its totient is φ = 116565600.

The previous prime is 116565569. The next prime is 116565607. The reversal of 116565601 is 106565611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111830625 + 4734976 = 10575^2 + 2176^2 .

It is an emirp because it is prime and its reverse (106565611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116565601 - 2⁵ = 116565569 is a prime.

It is not a weakly prime, because it can be changed into another prime (116565607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58282800 + 58282801.

It is an arithmetic number, because the mean of its divisors is an integer number (58282801).

Almost surely, 2^116565601 is an apocalyptic number.

It is an amenable number.

116565601 is a deficient number, since it is larger than the sum of its proper divisors (1).

116565601 is an equidigital number, since it uses as much as digits as its factorization.

116565601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 116565601 is about 10796.5550524230. Note that the first 3 decimals coincide. The cubic root of 116565601 is about 488.4912651694.

It can be divided in two parts, 1165 and 65601, that added together give a palindrome (66766).

The spelling of 116565601 in words is "one hundred sixteen million, five hundred sixty-five thousand, six hundred one".