116331521 has 2 divisors, whose sum is σ = 116331522. Its totient is φ = 116331520.

The previous prime is 116331511. The next prime is 116331569. The reversal of 116331521 is 125133611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78570496 + 37761025 = 8864^2 + 6145^2 .

It is a cyclic number.

It is not a de Polignac number, because 116331521 - 2¹⁰ = 116330497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (116331511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58165760 + 58165761.

It is an arithmetic number, because the mean of its divisors is an integer number (58165761).

Almost surely, 2^116331521 is an apocalyptic number.

It is an amenable number.

116331521 is a deficient number, since it is larger than the sum of its proper divisors (1).

116331521 is an equidigital number, since it uses as much as digits as its factorization.

116331521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 23.

The square root of 116331521 is about 10785.7091097433. The cubic root of 116331521 is about 488.1640598281.

The spelling of 116331521 in words is "one hundred sixteen million, three hundred thirty-one thousand, five hundred twenty-one".