20210959 has 2 divisors, whose sum is σ = 20210960. Its totient is φ = 20210958.

The previous prime is 20210929. The next prime is 20210963. The reversal of 20210959 is 95901202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20210959 - 2⁷ = 20210831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105479 + 10105480.

It is an arithmetic number, because the mean of its divisors is an integer number (10105480).

Almost surely, 2^20210959 is an apocalyptic number.

20210959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210959 is an equidigital number, since it uses as much as digits as its factorization.

20210959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 20210959 is about 4495.6600182843. The cubic root of 20210959 is about 272.3928102952.

The spelling of 20210959 in words is "twenty million, two hundred ten thousand, nine hundred fifty-nine".