505000071 has 12 divisors (see below), whose sum is σ = 731233360. Its totient is φ = 335841120.

The previous prime is 505000043. The next prime is 505000073. The reversal of 505000071 is 170000505.

It is a happy number.

It is not a de Polignac number, because 505000071 - 2⁹ = 504999559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505000073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64915 + ... + 72276.

Almost surely, 2^505000071 is an apocalyptic number.

505000071 is a deficient number, since it is larger than the sum of its proper divisors (226233289).

505000071 is a wasteful number, since it uses less digits than its factorization.

505000071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137606 (or 137603 counting only the distinct ones).

The product of its (nonzero) digits is 175, while the sum is 18.

The square root of 505000071 is about 22472.2066339734. The cubic root of 505000071 is about 796.3374614990.

Adding to 505000071 its reverse (170000505), we get a palindrome (675000576).

The spelling of 505000071 in words is "five hundred five million, seventy-one", and thus it is an aban number.