22388533 has 2 divisors, whose sum is σ = 22388534. Its totient is φ = 22388532.

The previous prime is 22388477. The next prime is 22388537. The reversal of 22388533 is 33588322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18861649 + 3526884 = 4343^2 + 1878^2 .

It is a cyclic number.

It is not a de Polignac number, because 22388533 - 2¹³ = 22380341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22388537) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11194266 + 11194267.

It is an arithmetic number, because the mean of its divisors is an integer number (11194267).

Almost surely, 2^22388533 is an apocalyptic number.

It is an amenable number.

22388533 is a deficient number, since it is larger than the sum of its proper divisors (1).

22388533 is an equidigital number, since it uses as much as digits as its factorization.

22388533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 22388533 is about 4731.6522484223. The cubic root of 22388533 is about 281.8438390635.

The spelling of 22388533 in words is "twenty-two million, three hundred eighty-eight thousand, five hundred thirty-three".