22051452 has 12 divisors (see below), whose sum is σ = 51453416. Its totient is φ = 7350480.

The previous prime is 22051433. The next prime is 22051459. The reversal of 22051452 is 25415022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051459) 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 3 ways as a sum of consecutive naturals, for example, 918799 + ... + 918822.

Almost surely, 2^22051452 is an apocalyptic number.

It is an amenable number.

22051452 is an abundant number, since it is smaller than the sum of its proper divisors (29401964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22051452 is a wasteful number, since it uses less digits than its factorization.

22051452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837628 (or 1837626 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22051452 is about 4695.8973583331. The cubic root of 22051452 is about 280.4222031892.

Adding to 22051452 its reverse (25415022), we get a palindrome (47466474).

The spelling of 22051452 in words is "twenty-two million, fifty-one thousand, four hundred fifty-two".