23122555 has 8 divisors (see below), whose sum is σ = 28081872. Its totient is φ = 18274848.

The previous prime is 23122553. The next prime is 23122577. The reversal of 23122555 is 55522132.

It is a happy number.

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 23122555 - 2¹ = 23122553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23122553) 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 7 ways as a sum of consecutive naturals, for example, 27444 + ... + 28273.

It is an arithmetic number, because the mean of its divisors is an integer number (3510234).

Almost surely, 2^23122555 is an apocalyptic number.

23122555 is a deficient number, since it is larger than the sum of its proper divisors (4959317).

23122555 is an equidigital number, since it uses as much as digits as its factorization.

23122555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55805.

The product of its digits is 3000, while the sum is 25.

The square root of 23122555 is about 4808.5917897031. The cubic root of 23122555 is about 284.8909195775.

Adding to 23122555 its reverse (55522132), we get a palindrome (78644687).

The spelling of 23122555 in words is "twenty-three million, one hundred twenty-two thousand, five hundred fifty-five".