20876057 has 2 divisors, whose sum is σ = 20876058. Its totient is φ = 20876056.

The previous prime is 20876047. The next prime is 20876069. The reversal of 20876057 is 75067802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19175641 + 1700416 = 4379^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 20876057 - 2¹⁰ = 20875033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20876047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10438028 + 10438029.

It is an arithmetic number, because the mean of its divisors is an integer number (10438029).

Almost surely, 2^20876057 is an apocalyptic number.

It is an amenable number.

20876057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20876057 is an equidigital number, since it uses as much as digits as its factorization.

20876057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 20876057 is about 4569.0323920935. The cubic root of 20876057 is about 275.3485695627.

The spelling of 20876057 in words is "twenty million, eight hundred seventy-six thousand, fifty-seven".