115221045 has 8 divisors (see below), whose sum is σ = 184353696. Its totient is φ = 61451216.

The previous prime is 115221023. The next prime is 115221049. The reversal of 115221045 is 540122511.

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 115221045 - 2¹² = 115216949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115221049) 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, 3840687 + ... + 3840716.

It is an arithmetic number, because the mean of its divisors is an integer number (23044212).

Almost surely, 2^115221045 is an apocalyptic number.

115221045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115221045 is a deficient number, since it is larger than the sum of its proper divisors (69132651).

115221045 is an equidigital number, since it uses as much as digits as its factorization.

115221045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681411.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 115221045 is about 10734.1066232826. The cubic root of 115221045 is about 486.6057874578.

Adding to 115221045 its reverse (540122511), we get a palindrome (655343556).

The spelling of 115221045 in words is "one hundred fifteen million, two hundred twenty-one thousand, forty-five".