505313285 has 4 divisors (see below), whose sum is σ = 606375948. Its totient is φ = 404250624.

The previous prime is 505313279. The next prime is 505313293. The reversal of 505313285 is 582313505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582313505 = 5 ⋅116462701.

It can be written as a sum of positive squares in 2 ways, for example, as 126855169 + 378458116 = 11263^2 + 19454^2 .

It is a cyclic number.

It is not a de Polignac number, because 505313285 - 2¹⁰ = 505312261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50531324 + ... + 50531333.

It is an arithmetic number, because the mean of its divisors is an integer number (151593987).

Almost surely, 2^505313285 is an apocalyptic number.

It is an amenable number.

505313285 is a deficient number, since it is larger than the sum of its proper divisors (101062663).

505313285 is a wasteful number, since it uses less digits than its factorization.

505313285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101062662.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 505313285 is about 22479.1744732764. The cubic root of 505313285 is about 796.5020637815.

The spelling of 505313285 in words is "five hundred five million, three hundred thirteen thousand, two hundred eighty-five".