115445261 has 2 divisors, whose sum is σ = 115445262. Its totient is φ = 115445260.

The previous prime is 115445243. The next prime is 115445287. The reversal of 115445261 is 162544511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96138025 + 19307236 = 9805^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 115445261 - 2¹⁴ = 115428877 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115445461) 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, 57722630 + 57722631.

It is an arithmetic number, because the mean of its divisors is an integer number (57722631).

Almost surely, 2^115445261 is an apocalyptic number.

It is an amenable number.

115445261 is a deficient number, since it is larger than the sum of its proper divisors (1).

115445261 is an equidigital number, since it uses as much as digits as its factorization.

115445261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 115445261 is about 10744.5456395326. The cubic root of 115445261 is about 486.9212220450.

Adding to 115445261 its reverse (162544511), we get a palindrome (277989772).

The spelling of 115445261 in words is "one hundred fifteen million, four hundred forty-five thousand, two hundred sixty-one".