116521973 has 4 divisors (see below), whose sum is σ = 116701068. Its totient is φ = 116342880.

The previous prime is 116521969. The next prime is 116521987. The reversal of 116521973 is 379125611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25472209 + 91049764 = 5047^2 + 9542^2 .

It is a cyclic number.

It is not a de Polignac number, because 116521973 - 2² = 116521969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116521373) 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, 88568 + ... + 89873.

It is an arithmetic number, because the mean of its divisors is an integer number (29175267).

Almost surely, 2^116521973 is an apocalyptic number.

It is an amenable number.

116521973 is a deficient number, since it is larger than the sum of its proper divisors (179095).

116521973 is an equidigital number, since it uses as much as digits as its factorization.

116521973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179094.

The product of its digits is 11340, while the sum is 35.

The square root of 116521973 is about 10794.5344040399. The cubic root of 116521973 is about 488.4303136361.

The spelling of 116521973 in words is "one hundred sixteen million, five hundred twenty-one thousand, nine hundred seventy-three".