115984621 has 2 divisors, whose sum is σ = 115984622. Its totient is φ = 115984620.

The previous prime is 115984597. The next prime is 115984633. The reversal of 115984621 is 126489511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95824521 + 20160100 = 9789^2 + 4490^2 .

It is an emirp because it is prime and its reverse (126489511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115984621 - 2¹³ = 115976429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115984681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57992310 + 57992311.

It is an arithmetic number, because the mean of its divisors is an integer number (57992311).

Almost surely, 2^115984621 is an apocalyptic number.

It is an amenable number.

115984621 is a deficient number, since it is larger than the sum of its proper divisors (1).

115984621 is an equidigital number, since it uses as much as digits as its factorization.

115984621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 115984621 is about 10769.6156384525. The cubic root of 115984621 is about 487.6783424631.

The spelling of 115984621 in words is "one hundred fifteen million, nine hundred eighty-four thousand, six hundred twenty-one".