116356521 has 4 divisors (see below), whose sum is σ = 155142032. Its totient is φ = 77571012.

The previous prime is 116356507. The next prime is 116356529. The reversal of 116356521 is 125653611.

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.

It is a de Polignac number, because none of the positive numbers 2^k-116356521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116356529) 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, 19392751 + ... + 19392756.

It is an arithmetic number, because the mean of its divisors is an integer number (38785508).

Almost surely, 2^116356521 is an apocalyptic number.

It is an amenable number.

116356521 is a deficient number, since it is larger than the sum of its proper divisors (38785511).

116356521 is an equidigital number, since it uses as much as digits as its factorization.

116356521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38785510.

The product of its digits is 5400, while the sum is 30.

The square root of 116356521 is about 10786.8679884385. The cubic root of 116356521 is about 488.1990266404.

The spelling of 116356521 in words is "one hundred sixteen million, three hundred fifty-six thousand, five hundred twenty-one".