115545521 has 8 divisors (see below), whose sum is σ = 142209984. Its totient is φ = 91420560.

The previous prime is 115545511. The next prime is 115545533. The reversal of 115545521 is 125545511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115545521 - 2¹⁴ = 115529137 is a prime.

It is a super-2 number, since 2×115545521² = 26701534846322882, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115545511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634775 + ... + 634956.

It is an arithmetic number, because the mean of its divisors is an integer number (17776248).

Almost surely, 2^115545521 is an apocalyptic number.

It is an amenable number.

115545521 is a deficient number, since it is larger than the sum of its proper divisors (26664463).

115545521 is a wasteful number, since it uses less digits than its factorization.

115545521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269751.

The product of its digits is 5000, while the sum is 29.

The square root of 115545521 is about 10749.2102500602. The cubic root of 115545521 is about 487.0621390351.

The spelling of 115545521 in words is "one hundred fifteen million, five hundred forty-five thousand, five hundred twenty-one".