22155226 has 8 divisors (see below), whose sum is σ = 33256800. Its totient is φ = 11069628.

The previous prime is 22155223. The next prime is 22155227. The reversal of 22155226 is 62255122.

It is a happy number.

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

It is a super-2 number, since 2×22155226² = 981708078222152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22155226.

It is not an unprimeable number, because it can be changed into a prime (22155223) 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 in 3 ways as a sum of consecutive naturals, for example, 475 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (4157100).

Almost surely, 2^22155226 is an apocalyptic number.

22155226 is a deficient number, since it is larger than the sum of its proper divisors (11101574).

22155226 is a wasteful number, since it uses less digits than its factorization.

22155226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7988.

The product of its digits is 2400, while the sum is 25.

The square root of 22155226 is about 4706.9338215021. The cubic root of 22155226 is about 280.8614033487.

It can be divided in two parts, 22155 and 226, that multiplied together give a triangular number (5007030 = T₃₁₆₄).

The spelling of 22155226 in words is "twenty-two million, one hundred fifty-five thousand, two hundred twenty-six".