22661155 has 16 divisors (see below), whose sum is σ = 30624768. Its totient is φ = 15948000.

The previous prime is 22661147. The next prime is 22661173. The reversal of 22661155 is 55116622.

It is not a de Polignac number, because 22661155 - 2³ = 22661147 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4941 + ... + 8350.

It is an arithmetic number, because the mean of its divisors is an integer number (1914048).

Almost surely, 2^22661155 is an apocalyptic number.

22661155 is a deficient number, since it is larger than the sum of its proper divisors (7963613).

22661155 is a wasteful number, since it uses less digits than its factorization.

22661155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338.

The product of its digits is 3600, while the sum is 28.

The square root of 22661155 is about 4760.3734097232. The cubic root of 22661155 is about 282.9832176740.

Adding to 22661155 its reverse (55116622), we get a palindrome (77777777).

The spelling of 22661155 in words is "twenty-two million, six hundred sixty-one thousand, one hundred fifty-five".