22541555 has 16 divisors (see below), whose sum is σ = 28334880. Its totient is φ = 17192448.

The previous prime is 22541549. The next prime is 22541567. The reversal of 22541555 is 55514522.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22541555 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11099 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (1770930).

Almost surely, 2^22541555 is an apocalyptic number.

22541555 is a deficient number, since it is larger than the sum of its proper divisors (5793325).

22541555 is a wasteful number, since it uses less digits than its factorization.

22541555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its digits is 10000, while the sum is 29.

The square root of 22541555 is about 4747.7947512503. The cubic root of 22541555 is about 282.4845006768.

The spelling of 22541555 in words is "twenty-two million, five hundred forty-one thousand, five hundred fifty-five".