115722229 has 4 divisors (see below), whose sum is σ = 132253984. Its totient is φ = 99190476.

The previous prime is 115722203. The next prime is 115722239. The reversal of 115722229 is 922227511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 922227511 = 179 ⋅5152109.

It is not a de Polignac number, because 115722229 - 2⁵ = 115722197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115722229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115722239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8265867 + ... + 8265880.

It is an arithmetic number, because the mean of its divisors is an integer number (33063496).

Almost surely, 2^115722229 is an apocalyptic number.

It is an amenable number.

115722229 is a deficient number, since it is larger than the sum of its proper divisors (16531755).

115722229 is an equidigital number, since it uses as much as digits as its factorization.

115722229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16531754.

The product of its digits is 5040, while the sum is 31.

The square root of 115722229 is about 10757.4266904311. The cubic root of 115722229 is about 487.3103065609.

The spelling of 115722229 in words is "one hundred fifteen million, seven hundred twenty-two thousand, two hundred twenty-nine".