486815557 has 2 divisors, whose sum is σ = 486815558. Its totient is φ = 486815556.

The previous prime is 486815551. The next prime is 486815561. The reversal of 486815557 is 755518684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403166241 + 83649316 = 20079^2 + 9146^2 .

It is a cyclic number.

It is not a de Polignac number, because 486815557 - 2⁷ = 486815429 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 486815557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (486815551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243407778 + 243407779.

It is an arithmetic number, because the mean of its divisors is an integer number (243407779).

Almost surely, 2^486815557 is an apocalyptic number.

It is an amenable number.

486815557 is a deficient number, since it is larger than the sum of its proper divisors (1).

486815557 is an equidigital number, since it uses as much as digits as its factorization.

486815557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344000, while the sum is 49.

The square root of 486815557 is about 22063.8971398980. The cubic root of 486815557 is about 786.6619593186.

The spelling of 486815557 in words is "four hundred eighty-six million, eight hundred fifteen thousand, five hundred fifty-seven".