116520217 has 12 divisors (see below), whose sum is σ = 134819440. Its totient is φ = 100350360.

The previous prime is 116520211. The next prime is 116520233. The reversal of 116520217 is 712025611.

It is not a de Polignac number, because 116520217 - 2²³ = 108131609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 116520191 and 116520200.

It is not an unprimeable number, because it can be changed into a prime (116520211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23043 + ... + 27640.

Almost surely, 2^116520217 is an apocalyptic number.

It is an amenable number.

116520217 is a deficient number, since it is larger than the sum of its proper divisors (18299223).

116520217 is a wasteful number, since it uses less digits than its factorization.

116520217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50724 (or 50713 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 116520217 is about 10794.4530662744. The cubic root of 116520217 is about 488.4278600562.

Adding to 116520217 its reverse (712025611), we get a palindrome (828545828).

The spelling of 116520217 in words is "one hundred sixteen million, five hundred twenty thousand, two hundred seventeen".