115223261 has 4 divisors (see below), whose sum is σ = 120232992. Its totient is φ = 110213532.

The previous prime is 115223257. The next prime is 115223267. The reversal of 115223261 is 162322511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115223261 - 2² = 115223257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5009707 = 115223261 / (1 + 1 + 5 + 2 + 2 + 3 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115223267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504831 + ... + 2504876.

It is an arithmetic number, because the mean of its divisors is an integer number (30058248).

Almost surely, 2^115223261 is an apocalyptic number.

It is an amenable number.

115223261 is a deficient number, since it is larger than the sum of its proper divisors (5009731).

115223261 is an equidigital number, since it uses as much as digits as its factorization.

115223261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009730.

The product of its digits is 720, while the sum is 23.

The square root of 115223261 is about 10734.2098451633. The cubic root of 115223261 is about 486.6089070022.

Adding to 115223261 its reverse (162322511), we get a palindrome (277545772).

The spelling of 115223261 in words is "one hundred fifteen million, two hundred twenty-three thousand, two hundred sixty-one".