22461145 has 8 divisors (see below), whose sum is σ = 30803904. Its totient is φ = 15401904.

The previous prime is 22461139. The next prime is 22461157. The reversal of 22461145 is 54116422.

It is a happy number.

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

It is not a de Polignac number, because 22461145 - 2³ = 22461137 is a prime.

It is a super-2 number, since 2×22461145² = 1009006069422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320839 + ... + 320908.

It is an arithmetic number, because the mean of its divisors is an integer number (3850488).

Almost surely, 2^22461145 is an apocalyptic number.

It is an amenable number.

22461145 is a deficient number, since it is larger than the sum of its proper divisors (8342759).

22461145 is an equidigital number, since it uses as much as digits as its factorization.

22461145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641759.

The product of its digits is 1920, while the sum is 25.

The square root of 22461145 is about 4739.3190439134. The cubic root of 22461145 is about 282.1482085647.

Adding to 22461145 its reverse (54116422), we get a palindrome (76577567).

The spelling of 22461145 in words is "twenty-two million, four hundred sixty-one thousand, one hundred forty-five".