22712155 has 16 divisors (see below), whose sum is σ = 29139264. Its totient is φ = 16952320.

The previous prime is 22712147. The next prime is 22712159. The reversal of 22712155 is 55121722.

It is not a de Polignac number, because 22712155 - 2³ = 22712147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22712159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2307 + ... + 7123.

It is an arithmetic number, because the mean of its divisors is an integer number (1821204).

Almost surely, 2^22712155 is an apocalyptic number.

22712155 is a deficient number, since it is larger than the sum of its proper divisors (6427109).

22712155 is a wasteful number, since it uses less digits than its factorization.

22712155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886.

The product of its digits is 1400, while the sum is 25.

The square root of 22712155 is about 4765.7271218566. The cubic root of 22712155 is about 283.1953476512.

Adding to 22712155 its reverse (55121722), we get a palindrome (77833877).

The spelling of 22712155 in words is "twenty-two million, seven hundred twelve thousand, one hundred fifty-five".