115421565 has 32 divisors (see below), whose sum is σ = 211507200. Its totient is φ = 52651584.

The previous prime is 115421539. The next prime is 115421591. The reversal of 115421565 is 565124511.

It is an interprime number because it is at equal distance from previous prime (115421539) and next prime (115421591).

It is not a de Polignac number, because 115421565 - 2¹⁰ = 115420541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67086 + ... + 68784.

It is an arithmetic number, because the mean of its divisors is an integer number (6609600).

Almost surely, 2^115421565 is an apocalyptic number.

115421565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115421565 is a deficient number, since it is larger than the sum of its proper divisors (96085635).

115421565 is a wasteful number, since it uses less digits than its factorization.

115421565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361.

The product of its digits is 6000, while the sum is 30.

The square root of 115421565 is about 10743.4428839176. The cubic root of 115421565 is about 486.8879050291.

The spelling of 115421565 in words is "one hundred fifteen million, four hundred twenty-one thousand, five hundred sixty-five".