22409851 has 4 divisors (see below), whose sum is σ = 22693600. Its totient is φ = 22126104.

The previous prime is 22409789. The next prime is 22409879. The reversal of 22409851 is 15890422.

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-22409851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22409251) 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, 141756 + ... + 141913.

It is an arithmetic number, because the mean of its divisors is an integer number (5673400).

Almost surely, 2^22409851 is an apocalyptic number.

22409851 is a deficient number, since it is larger than the sum of its proper divisors (283749).

22409851 is an equidigital number, since it uses as much as digits as its factorization.

22409851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283748.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 22409851 is about 4733.9044139061. The cubic root of 22409851 is about 281.9332664049.

The spelling of 22409851 in words is "twenty-two million, four hundred nine thousand, eight hundred fifty-one".