20582057 has 2 divisors, whose sum is σ = 20582058. Its totient is φ = 20582056.

The previous prime is 20582039. The next prime is 20582069. The reversal of 20582057 is 75028502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 341056 = 4499^2 + 584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20582057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20282057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10291028 + 10291029.

It is an arithmetic number, because the mean of its divisors is an integer number (10291029).

Almost surely, 2^20582057 is an apocalyptic number.

It is an amenable number.

20582057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20582057 is an equidigital number, since it uses as much as digits as its factorization.

20582057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 20582057 is about 4536.7451989284. The cubic root of 20582057 is about 274.0498648302.

The spelling of 20582057 in words is "twenty million, five hundred eighty-two thousand, fifty-seven".