115445321 has 2 divisors, whose sum is σ = 115445322. Its totient is φ = 115445320.

The previous prime is 115445287. The next prime is 115445327. The reversal of 115445321 is 123544511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 52417600 = 7939^2 + 7240^2 .

It is a cyclic number.

It is not a de Polignac number, because 115445321 - 2²² = 111251017 is a prime.

It is not a weakly prime, because it can be changed into another prime (115445327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57722660 + 57722661.

It is an arithmetic number, because the mean of its divisors is an integer number (57722661).

Almost surely, 2^115445321 is an apocalyptic number.

It is an amenable number.

115445321 is a deficient number, since it is larger than the sum of its proper divisors (1).

115445321 is an equidigital number, since it uses as much as digits as its factorization.

115445321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 115445321 is about 10744.5484316466. The cubic root of 115445321 is about 486.9213064003.

Adding to 115445321 its reverse (123544511), we get a palindrome (238989832).

The spelling of 115445321 in words is "one hundred fifteen million, four hundred forty-five thousand, three hundred twenty-one".