22531433 has 2 divisors, whose sum is σ = 22531434. Its totient is φ = 22531432.

The previous prime is 22531417. The next prime is 22531489. The reversal of 22531433 is 33413522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18003049 + 4528384 = 4243^2 + 2128^2 .

It is a cyclic number.

It is not a de Polignac number, because 22531433 - 2⁴ = 22531417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22531399 and 22531408.

It is not a weakly prime, because it can be changed into another prime (22531493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265716 + 11265717.

It is an arithmetic number, because the mean of its divisors is an integer number (11265717).

Almost surely, 2^22531433 is an apocalyptic number.

It is an amenable number.

22531433 is a deficient number, since it is larger than the sum of its proper divisors (1).

22531433 is an equidigital number, since it uses as much as digits as its factorization.

22531433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 23.

The square root of 22531433 is about 4746.7286629846. The cubic root of 22531433 is about 282.4422123164.

Adding to 22531433 its reverse (33413522), we get a palindrome (55944955).

The spelling of 22531433 in words is "twenty-two million, five hundred thirty-one thousand, four hundred thirty-three".