21822574253 has 4 divisors (see below), whose sum is σ = 21881080188. Its totient is φ = 21764068320.

The previous prime is 21822574157. The next prime is 21822574273. The reversal of 21822574253 is 35247522812.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18469353604 + 3353220649 = 135902^2 + 57907^2 .

It is a cyclic number.

It is not a de Polignac number, because 21822574253 - 2¹⁶ = 21822508717 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 21822574253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21822574273) 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, 29252408 + ... + 29253153.

It is an arithmetic number, because the mean of its divisors is an integer number (5470270047).

Almost surely, 2^21822574253 is an apocalyptic number.

It is an amenable number.

21822574253 is a deficient number, since it is larger than the sum of its proper divisors (58505935).

21822574253 is an equidigital number, since it uses as much as digits as its factorization.

21822574253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58505934.

The product of its digits is 268800, while the sum is 41.

The spelling of 21822574253 in words is "twenty-one billion, eight hundred twenty-two million, five hundred seventy-four thousand, two hundred fifty-three".