22115546 has 4 divisors (see below), whose sum is σ = 33173322. Its totient is φ = 11057772.

The previous prime is 22115537. The next prime is 22115549. The reversal of 22115546 is 64551122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21724921 + 390625 = 4661^2 + 625^2 .

It is not an unprimeable number, because it can be changed into a prime (22115549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528885 + ... + 5528888.

Almost surely, 2^22115546 is an apocalyptic number.

22115546 is a deficient number, since it is larger than the sum of its proper divisors (11057776).

22115546 is a wasteful number, since it uses less digits than its factorization.

22115546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11057775.

The product of its digits is 2400, while the sum is 26.

The square root of 22115546 is about 4702.7168743185. The cubic root of 22115546 is about 280.6936289310.

Adding to 22115546 its reverse (64551122), we get a palindrome (86666668).

The spelling of 22115546 in words is "twenty-two million, one hundred fifteen thousand, five hundred forty-six".