22551829 has 2 divisors, whose sum is σ = 22551830. Its totient is φ = 22551828.

The previous prime is 22551827. The next prime is 22551853. The reversal of 22551829 is 92815522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 178929 = 4730^2 + 423^2 .

It is a cyclic number.

It is not a de Polignac number, because 22551829 - 2¹ = 22551827 is a prime.

Together with 22551827, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22551794 and 22551803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22551827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11275914 + 11275915.

It is an arithmetic number, because the mean of its divisors is an integer number (11275915).

Almost surely, 2^22551829 is an apocalyptic number.

It is an amenable number.

22551829 is a deficient number, since it is larger than the sum of its proper divisors (1).

22551829 is an equidigital number, since it uses as much as digits as its factorization.

22551829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 34.

The square root of 22551829 is about 4748.8766039980. The cubic root of 22551829 is about 282.5274111288.

The spelling of 22551829 in words is "twenty-two million, five hundred fifty-one thousand, eight hundred twenty-nine".