115516771 has 4 divisors (see below), whose sum is σ = 116184672. Its totient is φ = 114848872.

The previous prime is 115516763. The next prime is 115516781. The reversal of 115516771 is 177615511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177615511 = 467 ⋅380333.

It is a cyclic number.

It is not a de Polignac number, because 115516771 - 2³ = 115516763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115516711) 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, 333691 + ... + 334036.

It is an arithmetic number, because the mean of its divisors is an integer number (29046168).

Almost surely, 2^115516771 is an apocalyptic number.

115516771 is a deficient number, since it is larger than the sum of its proper divisors (667901).

115516771 is an equidigital number, since it uses as much as digits as its factorization.

115516771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667900.

The product of its digits is 7350, while the sum is 34.

The square root of 115516771 is about 10747.8728593150. The cubic root of 115516771 is about 487.0217388017.

The spelling of 115516771 in words is "one hundred fifteen million, five hundred sixteen thousand, seven hundred seventy-one".