22655019 has 4 divisors (see below), whose sum is σ = 30206696. Its totient is φ = 15103344.

The previous prime is 22654979. The next prime is 22655027. The reversal of 22655019 is 91055622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22655019 - 2¹² = 22650923 is a prime.

It is a super-2 number, since 2×22655019² = 1026499771780722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22655089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3775834 + ... + 3775839.

It is an arithmetic number, because the mean of its divisors is an integer number (7551674).

Almost surely, 2^22655019 is an apocalyptic number.

22655019 is a deficient number, since it is larger than the sum of its proper divisors (7551677).

22655019 is an equidigital number, since it uses as much as digits as its factorization.

22655019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7551676.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 22655019 is about 4759.7288788333. The cubic root of 22655019 is about 282.9576740839.

The spelling of 22655019 in words is "twenty-two million, six hundred fifty-five thousand, nineteen".