22289537 has 2 divisors, whose sum is σ = 22289538. Its totient is φ = 22289536.

The previous prime is 22289483. The next prime is 22289557. The reversal of 22289537 is 73598222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21307456 + 982081 = 4616^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 22289537 - 2⁶ = 22289473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22289537.

It is not a weakly prime, because it can be changed into another prime (22289557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144768 + 11144769.

It is an arithmetic number, because the mean of its divisors is an integer number (11144769).

Almost surely, 2^22289537 is an apocalyptic number.

It is an amenable number.

22289537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22289537 is an equidigital number, since it uses as much as digits as its factorization.

22289537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 22289537 is about 4721.1796195443. The cubic root of 22289537 is about 281.4278130237.

The spelling of 22289537 in words is "twenty-two million, two hundred eighty-nine thousand, five hundred thirty-seven".