22533437 has 2 divisors, whose sum is σ = 22533438. Its totient is φ = 22533436.

The previous prime is 22533397. The next prime is 22533473. The reversal of 22533437 is 73433522.

Together with next prime (22533473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19456921 + 3076516 = 4411^2 + 1754^2 .

It is a cyclic number.

It is not a de Polignac number, because 22533437 - 2¹⁰ = 22532413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22533937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11266718 + 11266719.

It is an arithmetic number, because the mean of its divisors is an integer number (11266719).

Almost surely, 2^22533437 is an apocalyptic number.

It is an amenable number.

22533437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22533437 is an equidigital number, since it uses as much as digits as its factorization.

22533437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 29.

The square root of 22533437 is about 4746.9397510396. The cubic root of 22533437 is about 282.4505857654.

Adding to 22533437 its reverse (73433522), we get a palindrome (95966959).

The spelling of 22533437 in words is "twenty-two million, five hundred thirty-three thousand, four hundred thirty-seven".