22530351 has 4 divisors (see below), whose sum is σ = 30040472. Its totient is φ = 15020232.

The previous prime is 22530329. The next prime is 22530377. The reversal of 22530351 is 15303522.

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

It is not a de Polignac number, because 22530351 - 2⁷ = 22530223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530301) 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, 3755056 + ... + 3755061.

It is an arithmetic number, because the mean of its divisors is an integer number (7510118).

Almost surely, 2^22530351 is an apocalyptic number.

22530351 is a deficient number, since it is larger than the sum of its proper divisors (7510121).

22530351 is an equidigital number, since it uses as much as digits as its factorization.

22530351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510120.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 22530351 is about 4746.6146883858. The cubic root of 22530351 is about 282.4376911161.

Adding to 22530351 its reverse (15303522), we get a palindrome (37833873).

The spelling of 22530351 in words is "twenty-two million, five hundred thirty thousand, three hundred fifty-one".