22145633 has 4 divisors (see below), whose sum is σ = 22207680. Its totient is φ = 22083588.

The previous prime is 22145609. The next prime is 22145653. The reversal of 22145633 is 33654122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22145633 - 2⁶ = 22145569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22145653) 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, 30485 + ... + 31202.

It is an arithmetic number, because the mean of its divisors is an integer number (5551920).

Almost surely, 2^22145633 is an apocalyptic number.

It is an amenable number.

22145633 is a deficient number, since it is larger than the sum of its proper divisors (62047).

22145633 is an equidigital number, since it uses as much as digits as its factorization.

22145633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62046.

The product of its digits is 4320, while the sum is 26.

The square root of 22145633 is about 4705.9146826095. The cubic root of 22145633 is about 280.8208607335.

Adding to 22145633 its reverse (33654122), we get a palindrome (55799755).

It can be divided in two parts, 221 and 45633, that added together give a palindrome (45854).

The spelling of 22145633 in words is "twenty-two million, one hundred forty-five thousand, six hundred thirty-three".