115545321 has 24 divisors (see below), whose sum is σ = 170218880. Its totient is φ = 75512736.

The previous prime is 115545301. The next prime is 115545337. The reversal of 115545321 is 123545511.

115545321 is a `hidden beast` number, since 115 + 545 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 115545321 - 2¹⁷ = 115414249 is a prime.

It is a super-3 number, since 3×115545321³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115545301) 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, 115395 + ... + 116391.

Almost surely, 2^115545321 is an apocalyptic number.

It is an amenable number.

115545321 is a deficient number, since it is larger than the sum of its proper divisors (54673559).

115545321 is a wasteful number, since it uses less digits than its factorization.

115545321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1242 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 115545321 is about 10749.2009470472. The cubic root of 115545321 is about 487.0618580132.

The spelling of 115545321 in words is "one hundred fifteen million, five hundred forty-five thousand, three hundred twenty-one".