506245811 has 2 divisors, whose sum is σ = 506245812. Its totient is φ = 506245810.

The previous prime is 506245793. The next prime is 506245843. The reversal of 506245811 is 118542605.

It is an a-pointer prime, because the next prime (506245843) can be obtained adding 506245811 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506245811 is a prime.

It is not a weakly prime, because it can be changed into another prime (506245871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253122905 + 253122906.

It is an arithmetic number, because the mean of its divisors is an integer number (253122906).

Almost surely, 2^506245811 is an apocalyptic number.

506245811 is a deficient number, since it is larger than the sum of its proper divisors (1).

506245811 is an equidigital number, since it uses as much as digits as its factorization.

506245811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 506245811 is about 22499.9069109185. The cubic root of 506245811 is about 796.9917286208.

The spelling of 506245811 in words is "five hundred six million, two hundred forty-five thousand, eight hundred eleven".