22540435 has 4 divisors (see below), whose sum is σ = 27048528. Its totient is φ = 18032344.

The previous prime is 22540421. The next prime is 22540451. The reversal of 22540435 is 53404522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22540435 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254039 + ... + 2254048.

It is an arithmetic number, because the mean of its divisors is an integer number (6762132).

Almost surely, 2^22540435 is an apocalyptic number.

22540435 is a deficient number, since it is larger than the sum of its proper divisors (4508093).

22540435 is an equidigital number, since it uses as much as digits as its factorization.

22540435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508092.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 22540435 is about 4747.6768002887. The cubic root of 22540435 is about 282.4798220897.

Adding to 22540435 its reverse (53404522), we get a palindrome (75944957).

The spelling of 22540435 in words is "twenty-two million, five hundred forty thousand, four hundred thirty-five".