22155347 has 4 divisors (see below), whose sum is σ = 22171200. Its totient is φ = 22139496.

The previous prime is 22155317. The next prime is 22155361. The reversal of 22155347 is 74355122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74355122 = 2 ⋅37177561.

It is a cyclic number.

It is not a de Polignac number, because 22155347 - 2¹⁸ = 21893203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22155317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5603 + ... + 8700.

It is an arithmetic number, because the mean of its divisors is an integer number (5542800).

Almost surely, 2^22155347 is an apocalyptic number.

22155347 is a deficient number, since it is larger than the sum of its proper divisors (15853).

22155347 is a wasteful number, since it uses less digits than its factorization.

22155347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15852.

The product of its digits is 8400, while the sum is 29.

The square root of 22155347 is about 4706.9466748626. The cubic root of 22155347 is about 280.8619146527.

The spelling of 22155347 in words is "twenty-two million, one hundred fifty-five thousand, three hundred forty-seven".