22531051 has 2 divisors, whose sum is σ = 22531052. Its totient is φ = 22531050.

The previous prime is 22531049. The next prime is 22531073. The reversal of 22531051 is 15013522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22531051 - 2¹ = 22531049 is a prime.

Together with 22531049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22531351) 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 as a sum of consecutive naturals, namely, 11265525 + 11265526.

It is an arithmetic number, because the mean of its divisors is an integer number (11265526).

Almost surely, 2^22531051 is an apocalyptic number.

22531051 is a deficient number, since it is larger than the sum of its proper divisors (1).

22531051 is an equidigital number, since it uses as much as digits as its factorization.

22531051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 22531051 is about 4746.6884245756. The cubic root of 22531051 is about 282.4406161236.

Adding to 22531051 its reverse (15013522), we get a palindrome (37544573).

The spelling of 22531051 in words is "twenty-two million, five hundred thirty-one thousand, fifty-one".