22470551 has 4 divisors (see below), whose sum is σ = 22524600. Its totient is φ = 22416504.

The previous prime is 22470529. The next prime is 22470557. The reversal of 22470551 is 15507422.

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 22470551 - 2¹⁰ = 22469527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22470551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22470557) 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, 26396 + ... + 27233.

It is an arithmetic number, because the mean of its divisors is an integer number (5631150).

Almost surely, 2^22470551 is an apocalyptic number.

22470551 is a deficient number, since it is larger than the sum of its proper divisors (54049).

22470551 is an equidigital number, since it uses as much as digits as its factorization.

22470551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54048.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 22470551 is about 4740.3112766990. The cubic root of 22470551 is about 282.1875879119.

Adding to 22470551 its reverse (15507422), we get a palindrome (37977973).

The spelling of 22470551 in words is "twenty-two million, four hundred seventy thousand, five hundred fifty-one".