21035359 has 2 divisors, whose sum is σ = 21035360. Its totient is φ = 21035358.

The previous prime is 21035327. The next prime is 21035389. The reversal of 21035359 is 95353012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21035359 - 2⁵ = 21035327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21035389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517679 + 10517680.

It is an arithmetic number, because the mean of its divisors is an integer number (10517680).

Almost surely, 2^21035359 is an apocalyptic number.

21035359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21035359 is an equidigital number, since it uses as much as digits as its factorization.

21035359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 21035359 is about 4586.4320555307. The cubic root of 21035359 is about 276.0471765258.

The spelling of 21035359 in words is "twenty-one million, thirty-five thousand, three hundred fifty-nine".