115221446 has 4 divisors (see below), whose sum is σ = 172832172. Its totient is φ = 57610722.

The previous prime is 115221433. The next prime is 115221473. The reversal of 115221446 is 644122511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644122511 = 787 ⋅818453.

It is a super-3 number, since 3×115221446³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28805360 + ... + 28805363.

It is an arithmetic number, because the mean of its divisors is an integer number (43208043).

Almost surely, 2^115221446 is an apocalyptic number.

115221446 is a deficient number, since it is larger than the sum of its proper divisors (57610726).

115221446 is an equidigital number, since it uses as much as digits as its factorization.

115221446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57610725.

The product of its digits is 1920, while the sum is 26.

The square root of 115221446 is about 10734.1253020449. The cubic root of 115221446 is about 486.6063519631.

Adding to 115221446 its reverse (644122511), we get a palindrome (759343957).

The spelling of 115221446 in words is "one hundred fifteen million, two hundred twenty-one thousand, four hundred forty-six".