2020451457 has 4 divisors (see below), whose sum is σ = 2693935280. Its totient is φ = 1346967636.

The previous prime is 2020451453. The next prime is 2020451483. The reversal of 2020451457 is 7541540202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2020451457 - 2² = 2020451453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020451453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336741907 + ... + 336741912.

It is an arithmetic number, because the mean of its divisors is an integer number (673483820).

Almost surely, 2^2020451457 is an apocalyptic number.

It is an amenable number.

2020451457 is a deficient number, since it is larger than the sum of its proper divisors (673483823).

2020451457 is an equidigital number, since it uses as much as digits as its factorization.

2020451457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673483822.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 2020451457 is about 44949.4322211082. The cubic root of 2020451457 is about 1264.2010310981.

Adding to 2020451457 its reverse (7541540202), we get a palindrome (9561991659).

The spelling of 2020451457 in words is "two billion, twenty million, four hundred fifty-one thousand, four hundred fifty-seven".