21469033 has 2 divisors, whose sum is σ = 21469034. Its totient is φ = 21469032.

The previous prime is 21469027. The next prime is 21469057. The reversal of 21469033 is 33096412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15303744 + 6165289 = 3912^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 21469033 - 2⁵ = 21469001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21468992 and 21469010.

It is not a weakly prime, because it can be changed into another prime (21469073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10734516 + 10734517.

It is an arithmetic number, because the mean of its divisors is an integer number (10734517).

Almost surely, 2^21469033 is an apocalyptic number.

It is an amenable number.

21469033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21469033 is an equidigital number, since it uses as much as digits as its factorization.

21469033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 21469033 is about 4633.4687869889. The cubic root of 21469033 is about 277.9313228556.

The spelling of 21469033 in words is "twenty-one million, four hundred sixty-nine thousand, thirty-three".