22543051 has 4 divisors (see below), whose sum is σ = 23067352. Its totient is φ = 22018752.

The previous prime is 22543043. The next prime is 22543061. The reversal of 22543051 is 15034522.

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

It is not a de Polignac number, because 22543051 - 2³ = 22543043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22543061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262086 + ... + 262171.

It is an arithmetic number, because the mean of its divisors is an integer number (5766838).

Almost surely, 2^22543051 is an apocalyptic number.

22543051 is a deficient number, since it is larger than the sum of its proper divisors (524301).

22543051 is an equidigital number, since it uses as much as digits as its factorization.

22543051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524300.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22543051 is about 4747.9522954638. The cubic root of 22543051 is about 282.4907496906.

Adding to 22543051 its reverse (15034522), we get a palindrome (37577573).

The spelling of 22543051 in words is "twenty-two million, five hundred forty-three thousand, fifty-one".