115255120 has 20 divisors (see below), whose sum is σ = 267968340. Its totient is φ = 46102016.

The previous prime is 115255103. The next prime is 115255123. The reversal of 115255120 is 21552511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17007376 + 98247744 = 4124^2 + 9912^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 115255091 and 115255100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115255123) 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, 720265 + ... + 720424.

It is an arithmetic number, because the mean of its divisors is an integer number (13398417).

Almost surely, 2^115255120 is an apocalyptic number.

115255120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115255120 is an abundant number, since it is smaller than the sum of its proper divisors (152713220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115255120 is a wasteful number, since it uses less digits than its factorization.

115255120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440702 (or 1440696 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 115255120 is about 10735.6937363172. The cubic root of 115255120 is about 486.6537516641.

The spelling of 115255120 in words is "one hundred fifteen million, two hundred fifty-five thousand, one hundred twenty".