520005469 has 8 divisors (see below), whose sum is σ = 556047288. Its totient is φ = 484569600.

The previous prime is 520005383. The next prime is 520005487. The reversal of 520005469 is 964500025.

It can be written as a sum of positive squares in 4 ways, for example, as 274299844 + 245705625 = 16562^2 + 15675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520005469 - 2²⁵ = 486451037 is a prime.

It is a super-2 number, since 2×520005469² = 540811375579819922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520005469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520000469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149712 + ... + 153145.

It is an arithmetic number, because the mean of its divisors is an integer number (69505911).

Almost surely, 2^520005469 is an apocalyptic number.

It is an amenable number.

520005469 is a deficient number, since it is larger than the sum of its proper divisors (36041819).

520005469 is a wasteful number, since it uses less digits than its factorization.

520005469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302975.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 520005469 is about 22803.6284174252. The cubic root of 520005469 is about 804.1479708553.

The spelling of 520005469 in words is "five hundred twenty million, five thousand, four hundred sixty-nine".