520549730 has 8 divisors (see below), whose sum is σ = 936989532. Its totient is φ = 208219888.

The previous prime is 520549717. The next prime is 520549763. The reversal of 520549730 is 37945025.

It can be written as a sum of positive squares in 2 ways, for example, as 517153081 + 3396649 = 22741^2 + 1843^2 .

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

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, 26027477 + ... + 26027496.

Almost surely, 2^520549730 is an apocalyptic number.

520549730 is a deficient number, since it is larger than the sum of its proper divisors (416439802).

520549730 is a wasteful number, since it uses less digits than its factorization.

520549730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52054980.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 520549730 is about 22815.5589455968. The cubic root of 520549730 is about 804.4284254529.

The spelling of 520549730 in words is "five hundred twenty million, five hundred forty-nine thousand, seven hundred thirty".