22270155 has 8 divisors (see below), whose sum is σ = 35632272. Its totient is φ = 11877408.

The previous prime is 22270139. The next prime is 22270159. The reversal of 22270155 is 55107222.

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

It is not a de Polignac number, because 22270155 - 2⁴ = 22270139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22270159) 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 7 ways as a sum of consecutive naturals, for example, 742324 + ... + 742353.

It is an arithmetic number, because the mean of its divisors is an integer number (4454034).

Almost surely, 2^22270155 is an apocalyptic number.

22270155 is a deficient number, since it is larger than the sum of its proper divisors (13362117).

22270155 is a wasteful number, since it uses less digits than its factorization.

22270155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484685.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22270155 is about 4719.1265081581. The cubic root of 22270155 is about 281.3462169565.

Adding to 22270155 its reverse (55107222), we get a palindrome (77377377).

The spelling of 22270155 in words is "twenty-two million, two hundred seventy thousand, one hundred fifty-five".