116561499 has 4 divisors (see below), whose sum is σ = 155415336. Its totient is φ = 77707664.

The previous prime is 116561479. The next prime is 116561531. The reversal of 116561499 is 994165611.

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

It is a cyclic number.

It is not a de Polignac number, because 116561499 - 2¹² = 116557403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116561499.

It is not an unprimeable number, because it can be changed into a prime (116561449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19426914 + ... + 19426919.

It is an arithmetic number, because the mean of its divisors is an integer number (38853834).

Almost surely, 2^116561499 is an apocalyptic number.

116561499 is a deficient number, since it is larger than the sum of its proper divisors (38853837).

116561499 is an equidigital number, since it uses as much as digits as its factorization.

116561499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38853836.

The product of its digits is 58320, while the sum is 42.

The square root of 116561499 is about 10796.3650827489. The cubic root of 116561499 is about 488.4855350208.

The spelling of 116561499 in words is "one hundred sixteen million, five hundred sixty-one thousand, four hundred ninety-nine".