115222729 has 2 divisors, whose sum is σ = 115222730. Its totient is φ = 115222728.

The previous prime is 115222727. The next prime is 115222733. The reversal of 115222729 is 927222511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86062729 + 29160000 = 9277^2 + 5400^2 .

It is a cyclic number.

It is not a de Polignac number, because 115222729 - 2¹ = 115222727 is a prime.

Together with 115222727, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 115222729.

It is not a weakly prime, because it can be changed into another prime (115222727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57611364 + 57611365.

It is an arithmetic number, because the mean of its divisors is an integer number (57611365).

Almost surely, 2^115222729 is an apocalyptic number.

It is an amenable number.

115222729 is a deficient number, since it is larger than the sum of its proper divisors (1).

115222729 is an equidigital number, since it uses as much as digits as its factorization.

115222729 is an evil number, because the sum of its binary digits is even.

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

The square root of 115222729 is about 10734.1850645496. The cubic root of 115222729 is about 486.6081580899.

The spelling of 115222729 in words is "one hundred fifteen million, two hundred twenty-two thousand, seven hundred twenty-nine".