505305071 has 2 divisors, whose sum is σ = 505305072. Its totient is φ = 505305070.

The previous prime is 505305067. The next prime is 505305091. The reversal of 505305071 is 170503505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505305071 - 2² = 505305067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505305071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505305001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252652535 + 252652536.

It is an arithmetic number, because the mean of its divisors is an integer number (252652536).

Almost surely, 2^505305071 is an apocalyptic number.

505305071 is a deficient number, since it is larger than the sum of its proper divisors (1).

505305071 is an equidigital number, since it uses as much as digits as its factorization.

505305071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 505305071 is about 22478.9917700950. The cubic root of 505305071 is about 796.4977479748.

Adding to 505305071 its reverse (170503505), we get a palindrome (675808576).

The spelling of 505305071 in words is "five hundred five million, three hundred five thousand, seventy-one".