115229521 has 8 divisors (see below), whose sum is σ = 127476288. Its totient is φ = 103278000.

The previous prime is 115229497. The next prime is 115229561. The reversal of 115229521 is 125922511.

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

It is a cyclic number.

It is not a de Polignac number, because 115229521 - 2⁵ = 115229489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115229521.

It is not an unprimeable number, because it can be changed into a prime (115229561) 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, 72990 + ... + 74551.

It is an arithmetic number, because the mean of its divisors is an integer number (15934536).

Almost surely, 2^115229521 is an apocalyptic number.

115229521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115229521 is a deficient number, since it is larger than the sum of its proper divisors (12246767).

115229521 is a wasteful number, since it uses less digits than its factorization.

115229521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147623.

The product of its digits is 1800, while the sum is 28.

The square root of 115229521 is about 10734.5014322976. The cubic root of 115229521 is about 486.6177192176.

The spelling of 115229521 in words is "one hundred fifteen million, two hundred twenty-nine thousand, five hundred twenty-one".