22023481 has 2 divisors, whose sum is σ = 22023482. Its totient is φ = 22023480.

The previous prime is 22023479. The next prime is 22023497. The reversal of 22023481 is 18432022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20793600 + 1229881 = 4560^2 + 1109^2 .

It is a cyclic number.

It is not a de Polignac number, because 22023481 - 2¹ = 22023479 is a prime.

It is a super-2 number, since 2×22023481² = 970067430714722, which contains 22 as substring.

Together with 22023479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22023431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011740 + 11011741.

It is an arithmetic number, because the mean of its divisors is an integer number (11011741).

Almost surely, 2^22023481 is an apocalyptic number.

It is an amenable number.

22023481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22023481 is an equidigital number, since it uses as much as digits as its factorization.

22023481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 22023481 is about 4692.9181752935. The cubic root of 22023481 is about 280.3035865374.

Adding to 22023481 its product of nonzero digits (768), we get a square (22024249 = 4693²).

The spelling of 22023481 in words is "twenty-two million, twenty-three thousand, four hundred eighty-one".