505711307 has 4 divisors (see below), whose sum is σ = 505824960. Its totient is φ = 505597656.

The previous prime is 505711253. The next prime is 505711321. The reversal of 505711307 is 703117505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703117505 = 5 ⋅140623501.

It is a cyclic number.

It is not a de Polignac number, because 505711307 - 2¹⁸ = 505449163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505711307.

It is not an unprimeable number, because it can be changed into a prime (505711397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49868 + ... + 59145.

It is an arithmetic number, because the mean of its divisors is an integer number (126456240).

Almost surely, 2^505711307 is an apocalyptic number.

505711307 is a deficient number, since it is larger than the sum of its proper divisors (113653).

505711307 is a wasteful number, since it uses less digits than its factorization.

505711307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113652.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 505711307 is about 22488.0258582206. The cubic root of 505711307 is about 796.7111368145.

The spelling of 505711307 in words is "five hundred five million, seven hundred eleven thousand, three hundred seven".