115722109 has 4 divisors (see below), whose sum is σ = 115799616. Its totient is φ = 115644604.

The previous prime is 115722107. The next prime is 115722137. The reversal of 115722109 is 901227511.

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 115722109 - 2¹ = 115722107 is a prime.

It is a super-2 number, since 2×115722109² = 26783213022815762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115722107) 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, 36469 + ... + 39514.

It is an arithmetic number, because the mean of its divisors is an integer number (28949904).

Almost surely, 2^115722109 is an apocalyptic number.

It is an amenable number.

115722109 is a deficient number, since it is larger than the sum of its proper divisors (77507).

115722109 is an equidigital number, since it uses as much as digits as its factorization.

115722109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77506.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 115722109 is about 10757.4211128876. The cubic root of 115722109 is about 487.3101381194.

The spelling of 115722109 in words is "one hundred fifteen million, seven hundred twenty-two thousand, one hundred nine".