21414733 has 2 divisors, whose sum is σ = 21414734. Its totient is φ = 21414732.

The previous prime is 21414719. The next prime is 21414737. The reversal of 21414733 is 33741412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14768649 + 6646084 = 3843^2 + 2578^2 .

It is a cyclic number.

It is not a de Polignac number, because 21414733 - 2⁹ = 21414221 is a prime.

It is a super-2 number, since 2×21414733² = 917181578922578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21414698 and 21414707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21414737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707366 + 10707367.

It is an arithmetic number, because the mean of its divisors is an integer number (10707367).

Almost surely, 2^21414733 is an apocalyptic number.

It is an amenable number.

21414733 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414733 is an equidigital number, since it uses as much as digits as its factorization.

21414733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 21414733 is about 4627.6055363438. The cubic root of 21414733 is about 277.6968081456.

The spelling of 21414733 in words is "twenty-one million, four hundred fourteen thousand, seven hundred thirty-three".