520386273 has 18 divisors (see below), whose sum is σ = 826216482. Its totient is φ = 315384960.

The previous prime is 520386263. The next prime is 520386281. The reversal of 520386273 is 372683025.

520386273 is a `hidden beast` number, since 5 + 2 + 0 + 386 + 273 = 666.

It can be written as a sum of positive squares in only one way, i.e., 516971169 + 3415104 = 22737^2 + 1848^2 .

It is not a de Polignac number, because 520386273 - 2¹⁶ = 520320737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520386203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 237840 + ... + 240017.

Almost surely, 2^520386273 is an apocalyptic number.

It is an amenable number.

520386273 is a deficient number, since it is larger than the sum of its proper divisors (305830209).

520386273 is a wasteful number, since it uses less digits than its factorization.

520386273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477885 (or 477871 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 520386273 is about 22811.9765255008. The cubic root of 520386273 is about 804.3442175378.

It can be divided in two parts, 52038 and 6273, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 520386273 in words is "five hundred twenty million, three hundred eighty-six thousand, two hundred seventy-three".