4520820457 has 2 divisors, whose sum is σ = 4520820458. Its totient is φ = 4520820456.

The previous prime is 4520820439. The next prime is 4520820503. The reversal of 4520820457 is 7540280254.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4171093056 + 349727401 = 64584^2 + 18701^2 .

It is a cyclic number.

It is not a de Polignac number, because 4520820457 - 2⁷ = 4520820329 is a prime.

It is not a weakly prime, because it can be changed into another prime (4520820757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260410228 + 2260410229.

It is an arithmetic number, because the mean of its divisors is an integer number (2260410229).

Almost surely, 2^4520820457 is an apocalyptic number.

It is an amenable number.

4520820457 is a deficient number, since it is larger than the sum of its proper divisors (1).

4520820457 is an equidigital number, since it uses as much as digits as its factorization.

4520820457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 4520820457 is about 67237.0467599522. The cubic root of 4520820457 is about 1653.5059162822.

The spelling of 4520820457 in words is "four billion, five hundred twenty million, eight hundred twenty thousand, four hundred fifty-seven".