115155765 has 24 divisors (see below), whose sum is σ = 201853080. Its totient is φ = 60724224.

The previous prime is 115155749. The next prime is 115155769. The reversal of 115155765 is 567551511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18507204 + 96648561 = 4302^2 + 9831^2 .

It is not a de Polignac number, because 115155765 - 2⁴ = 115155749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115155769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10372 + ... + 18381.

It is an arithmetic number, because the mean of its divisors is an integer number (8410545).

Almost surely, 2^115155765 is an apocalyptic number.

115155765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115155765 is a deficient number, since it is larger than the sum of its proper divisors (86697315).

115155765 is a wasteful number, since it uses less digits than its factorization.

115155765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28853 (or 28850 counting only the distinct ones).

The product of its digits is 26250, while the sum is 36.

The square root of 115155765 is about 10731.0654177486. The cubic root of 115155765 is about 486.5138724586.

The spelling of 115155765 in words is "one hundred fifteen million, one hundred fifty-five thousand, seven hundred sixty-five".