2020457 has 2 divisors, whose sum is σ = 2020458. Its totient is φ = 2020456.

The previous prime is 2020429. The next prime is 2020463. The reversal of 2020457 is 7540202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1590121 + 430336 = 1261^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020457 - 2⁶ = 2020393 is a prime.

It is an Ulam number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (2020477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010228 + 1010229.

It is an arithmetic number, because the mean of its divisors is an integer number (1010229).

2^2020457 is an apocalyptic number.

It is an amenable number.

2020457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020457 is an equidigital number, since it uses as much as digits as its factorization.

2020457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2020457 is about 1421.4278033020. The cubic root of 2020457 is about 126.4202187186.

Adding to 2020457 its reverse (7540202), we get a palindrome (9560659).

The spelling of 2020457 in words is "two million, twenty thousand, four hundred fifty-seven".