115221455 has 8 divisors (see below), whose sum is σ = 138323472. Its totient is φ = 92138688.

The previous prime is 115221433. The next prime is 115221473. The reversal of 115221455 is 554122511.

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 115221455 - 2¹⁶ = 115155919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19979 + ... + 25091.

It is an arithmetic number, because the mean of its divisors is an integer number (17290434).

Almost surely, 2^115221455 is an apocalyptic number.

115221455 is a deficient number, since it is larger than the sum of its proper divisors (23102017).

115221455 is an equidigital number, since it uses as much as digits as its factorization.

115221455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9625.

The product of its digits is 2000, while the sum is 26.

The square root of 115221455 is about 10734.1257212686. The cubic root of 115221455 is about 486.6063646328.

Adding to 115221455 its reverse (554122511), we get a palindrome (669343966).

The spelling of 115221455 in words is "one hundred fifteen million, two hundred twenty-one thousand, four hundred fifty-five".