22562989 has 2 divisors, whose sum is σ = 22562990. Its totient is φ = 22562988.

The previous prime is 22562963. The next prime is 22563017. The reversal of 22562989 is 98926522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12545764 + 10017225 = 3542^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 22562989 - 2¹⁷ = 22431917 is a prime.

It is a super-2 number, since 2×22562989² = 1018176945228242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22562909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11281494 + 11281495.

It is an arithmetic number, because the mean of its divisors is an integer number (11281495).

Almost surely, 2^22562989 is an apocalyptic number.

It is an amenable number.

22562989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22562989 is an equidigital number, since it uses as much as digits as its factorization.

22562989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 22562989 is about 4750.0514734053. The cubic root of 22562989 is about 282.5740072896.

The spelling of 22562989 in words is "twenty-two million, five hundred sixty-two thousand, nine hundred eighty-nine".