506404057 has 2 divisors, whose sum is σ = 506404058. Its totient is φ = 506404056.

The previous prime is 506404051. The next prime is 506404103. The reversal of 506404057 is 750404605.

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., 490888336 + 15515721 = 22156^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 506404057 - 2³ = 506404049 is a prime.

It is not a weakly prime, because it can be changed into another prime (506404051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253202028 + 253202029.

It is an arithmetic number, because the mean of its divisors is an integer number (253202029).

Almost surely, 2^506404057 is an apocalyptic number.

It is an amenable number.

506404057 is a deficient number, since it is larger than the sum of its proper divisors (1).

506404057 is an equidigital number, since it uses as much as digits as its factorization.

506404057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 506404057 is about 22503.4232284779. The cubic root of 506404057 is about 797.0747631278.

The spelling of 506404057 in words is "five hundred six million, four hundred four thousand, fifty-seven".