506421737 has 2 divisors, whose sum is σ = 506421738. Its totient is φ = 506421736.

The previous prime is 506421677. The next prime is 506421779. The reversal of 506421737 is 737124605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506295001 + 126736 = 22501^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 506421737 - 2¹⁰ = 506420713 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 506421697 and 506421706.

It is not a weakly prime, because it can be changed into another prime (506421787) 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, 253210868 + 253210869.

It is an arithmetic number, because the mean of its divisors is an integer number (253210869).

Almost surely, 2^506421737 is an apocalyptic number.

It is an amenable number.

506421737 is a deficient number, since it is larger than the sum of its proper divisors (1).

506421737 is an equidigital number, since it uses as much as digits as its factorization.

506421737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 506421737 is about 22503.8160541718. The cubic root of 506421737 is about 797.0840390658.

The spelling of 506421737 in words is "five hundred six million, four hundred twenty-one thousand, seven hundred thirty-seven".