22104555 has 16 divisors (see below), whose sum is σ = 38582784. Its totient is φ = 10717280.

The previous prime is 22104553. The next prime is 22104559. The reversal of 22104555 is 55540122.

It is a happy number.

It is not a de Polignac number, because 22104555 - 2¹ = 22104553 is a prime.

It is a super-2 number, since 2×22104555² = 977222703496050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22104553) 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 15 ways as a sum of consecutive naturals, for example, 66819 + ... + 67148.

It is an arithmetic number, because the mean of its divisors is an integer number (2411424).

Almost surely, 2^22104555 is an apocalyptic number.

22104555 is a deficient number, since it is larger than the sum of its proper divisors (16478229).

22104555 is a wasteful number, since it uses less digits than its factorization.

22104555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133986.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 22104555 is about 4701.5481492802. The cubic root of 22104555 is about 280.6471214516.

Adding to 22104555 its reverse (55540122), we get a palindrome (77644677).

The spelling of 22104555 in words is "twenty-two million, one hundred four thousand, five hundred fifty-five".