21413033 has 8 divisors (see below), whose sum is σ = 22183680. Its totient is φ = 20647440.

The previous prime is 21413027. The next prime is 21413039. The reversal of 21413033 is 33031412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21413027) and next prime (21413039).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21413033 - 2¹⁴ = 21396649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21413039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8738 + ... + 10916.

It is an arithmetic number, because the mean of its divisors is an integer number (2772960).

Almost surely, 2^21413033 is an apocalyptic number.

It is an amenable number.

21413033 is a deficient number, since it is larger than the sum of its proper divisors (770647).

21413033 is a wasteful number, since it uses less digits than its factorization.

21413033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 21413033 is about 4627.4218523925. The cubic root of 21413033 is about 277.6894596678.

Adding to 21413033 its reverse (33031412), we get a palindrome (54444445).

The spelling of 21413033 in words is "twenty-one million, four hundred thirteen thousand, thirty-three".