21035059 has 2 divisors, whose sum is σ = 21035060. Its totient is φ = 21035058.

The previous prime is 21035029. The next prime is 21035111. The reversal of 21035059 is 95053012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21035059 - 2¹¹ = 21033011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21035029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517529 + 10517530.

It is an arithmetic number, because the mean of its divisors is an integer number (10517530).

Almost surely, 2^21035059 is an apocalyptic number.

21035059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21035059 is an equidigital number, since it uses as much as digits as its factorization.

21035059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 21035059 is about 4586.3993502529. The cubic root of 21035059 is about 276.0458642188.

The spelling of 21035059 in words is "twenty-one million, thirty-five thousand, fifty-nine".