520473673 has 2 divisors, whose sum is σ = 520473674. Its totient is φ = 520473672.

The previous prime is 520473659. The next prime is 520473743. The reversal of 520473673 is 376374025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499433104 + 21040569 = 22348^2 + 4587^2 .

It is a cyclic number.

It is not a de Polignac number, because 520473673 - 2⁵ = 520473641 is a prime.

It is a super-2 number, since 2×520473673² = 541785688572221858, which contains 22 as substring.

It is equal to p_27376156 and since 520473673 and 27376156 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (520453673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260236836 + 260236837.

It is an arithmetic number, because the mean of its divisors is an integer number (260236837).

Almost surely, 2^520473673 is an apocalyptic number.

It is an amenable number.

520473673 is a deficient number, since it is larger than the sum of its proper divisors (1).

520473673 is an equidigital number, since it uses as much as digits as its factorization.

520473673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 37.

The square root of 520473673 is about 22813.8921054694. The cubic root of 520473673 is about 804.3892454673.

The spelling of 520473673 in words is "five hundred twenty million, four hundred seventy-three thousand, six hundred seventy-three".