2040520457 has 2 divisors, whose sum is σ = 2040520458. Its totient is φ = 2040520456.

The previous prime is 2040520411. The next prime is 2040520481. The reversal of 2040520457 is 7540250402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2035453456 + 5067001 = 45116^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040520457 - 2⁸ = 2040520201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2040522457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020260228 + 1020260229.

It is an arithmetic number, because the mean of its divisors is an integer number (1020260229).

Almost surely, 2^2040520457 is an apocalyptic number.

It is an amenable number.

2040520457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040520457 is an equidigital number, since it uses as much as digits as its factorization.

2040520457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 2040520457 is about 45172.1203509421. The cubic root of 2040520457 is about 1268.3729877019.

Adding to 2040520457 its reverse (7540250402), we get a palindrome (9580770859).

The spelling of 2040520457 in words is "two billion, forty million, five hundred twenty thousand, four hundred fifty-seven".