22033481 has 2 divisors, whose sum is σ = 22033482. Its totient is φ = 22033480.

The previous prime is 22033477. The next prime is 22033489. The reversal of 22033481 is 18433022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13623481 + 8410000 = 3691^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 22033481 - 2² = 22033477 is a prime.

It is a super-2 number, since 2×22033481² = 970948569954722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22033489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11016740 + 11016741.

It is an arithmetic number, because the mean of its divisors is an integer number (11016741).

Almost surely, 2^22033481 is an apocalyptic number.

It is an amenable number.

22033481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22033481 is an equidigital number, since it uses as much as digits as its factorization.

22033481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22033481 is about 4693.9834895321. The cubic root of 22033481 is about 280.3460050773.

The spelling of 22033481 in words is "twenty-two million, thirty-three thousand, four hundred eighty-one".