22090155 has 8 divisors (see below), whose sum is σ = 35344272. Its totient is φ = 11781408.

The previous prime is 22090153. The next prime is 22090177. The reversal of 22090155 is 55109022.

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

It is not a de Polignac number, because 22090155 - 2¹ = 22090153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22090151) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 736324 + ... + 736353.

It is an arithmetic number, because the mean of its divisors is an integer number (4418034).

Almost surely, 2^22090155 is an apocalyptic number.

22090155 is a deficient number, since it is larger than the sum of its proper divisors (13254117).

22090155 is a wasteful number, since it uses less digits than its factorization.

22090155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472685.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 22090155 is about 4700.0164893328. The cubic root of 22090155 is about 280.5861657430.

Adding to 22090155 its reverse (55109022), we get a palindrome (77199177).

The spelling of 22090155 in words is "twenty-two million, ninety thousand, one hundred fifty-five".