505045637 has 2 divisors, whose sum is σ = 505045638. Its totient is φ = 505045636.

The previous prime is 505045633. The next prime is 505045679. The reversal of 505045637 is 736540505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443987041 + 61058596 = 21071^2 + 7814^2 .

It is a cyclic number.

It is not a de Polignac number, because 505045637 - 2² = 505045633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505045597 and 505045606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505045633) 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, 252522818 + 252522819.

It is an arithmetic number, because the mean of its divisors is an integer number (252522819).

Almost surely, 2^505045637 is an apocalyptic number.

It is an amenable number.

505045637 is a deficient number, since it is larger than the sum of its proper divisors (1).

505045637 is an equidigital number, since it uses as much as digits as its factorization.

505045637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 505045637 is about 22473.2204412274. The cubic root of 505045637 is about 796.3614118729.

The spelling of 505045637 in words is "five hundred five million, forty-five thousand, six hundred thirty-seven".