116506553 has 4 divisors (see below), whose sum is σ = 117396048. Its totient is φ = 115617060.

The previous prime is 116506549. The next prime is 116506567. The reversal of 116506553 is 355605611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355605611 = 4111 ⋅86501.

It is a cyclic number.

It is not a de Polignac number, because 116506553 - 2² = 116506549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116506583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444551 + ... + 444812.

It is an arithmetic number, because the mean of its divisors is an integer number (29349012).

Almost surely, 2^116506553 is an apocalyptic number.

It is an amenable number.

116506553 is a deficient number, since it is larger than the sum of its proper divisors (889495).

116506553 is an equidigital number, since it uses as much as digits as its factorization.

116506553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889494.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 116506553 is about 10793.8201300559. The cubic root of 116506553 is about 488.4087671201.

The spelling of 116506553 in words is "one hundred sixteen million, five hundred six thousand, five hundred fifty-three".