22451442551 has 4 divisors (see below), whose sum is σ = 22557847704. Its totient is φ = 22345037400.

The previous prime is 22451442527. The next prime is 22451442577. The reversal of 22451442551 is 15524415422.

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

It is a cyclic number.

It is not a de Polignac number, because 22451442551 - 2¹⁴ = 22451426167 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 (22451442521) 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, 53202260 + ... + 53202681.

It is an arithmetic number, because the mean of its divisors is an integer number (5639461926).

Almost surely, 2^22451442551 is an apocalyptic number.

22451442551 is a deficient number, since it is larger than the sum of its proper divisors (106405153).

22451442551 is a wasteful number, since it uses less digits than its factorization.

22451442551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106405152.

The product of its digits is 64000, while the sum is 35.

Adding to 22451442551 its reverse (15524415422), we get a palindrome (37975857973).

The spelling of 22451442551 in words is "twenty-two billion, four hundred fifty-one million, four hundred forty-two thousand, five hundred fifty-one".