520845073 has 16 divisors (see below), whose sum is σ = 599639040. Its totient is φ = 443163600.

The previous prime is 520845067. The next prime is 520845109. The reversal of 520845073 is 370548025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 520845073 - 2¹³ = 520836881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520845053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911878 + ... + 912448.

It is an arithmetic number, because the mean of its divisors is an integer number (37477440).

Almost surely, 2^520845073 is an apocalyptic number.

It is an amenable number.

520845073 is a deficient number, since it is larger than the sum of its proper divisors (78793967).

520845073 is a wasteful number, since it uses less digits than its factorization.

520845073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 520845073 is about 22822.0304311426. The cubic root of 520845073 is about 804.5805322052.

The spelling of 520845073 in words is "five hundred twenty million, eight hundred forty-five thousand, seventy-three".