22320255 has 8 divisors (see below), whose sum is σ = 35712432. Its totient is φ = 11904128.

The previous prime is 22320251. The next prime is 22320283. The reversal of 22320255 is 55202322.

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

It is a cyclic number.

It is not a de Polignac number, because 22320255 - 2² = 22320251 is a prime.

It is a super-3 number, since 3×22320255³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743994 + ... + 744023.

It is an arithmetic number, because the mean of its divisors is an integer number (4464054).

Almost surely, 2^22320255 is an apocalyptic number.

22320255 is a deficient number, since it is larger than the sum of its proper divisors (13392177).

22320255 is a wasteful number, since it uses less digits than its factorization.

22320255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488025.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22320255 is about 4724.4317118570. The cubic root of 22320255 is about 281.5570355570.

Adding to 22320255 its reverse (55202322), we get a palindrome (77522577).

The spelling of 22320255 in words is "twenty-two million, three hundred twenty thousand, two hundred fifty-five".