20972059 has 2 divisors, whose sum is σ = 20972060. Its totient is φ = 20972058.

The previous prime is 20972053. The next prime is 20972071. The reversal of 20972059 is 95027902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20972059 - 2¹¹ = 20970011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20972053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10486029 + 10486030.

It is an arithmetic number, because the mean of its divisors is an integer number (10486030).

Almost surely, 2^20972059 is an apocalyptic number.

20972059 is a deficient number, since it is larger than the sum of its proper divisors (1).

20972059 is an equidigital number, since it uses as much as digits as its factorization.

20972059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 20972059 is about 4579.5260671821. The cubic root of 20972059 is about 275.7700028533.

The spelling of 20972059 in words is "twenty million, nine hundred seventy-two thousand, fifty-nine".