520211245 has 8 divisors (see below), whose sum is σ = 626385816. Its totient is φ = 414747456.

The previous prime is 520211227. The next prime is 520211257. The reversal of 520211245 is 542112025.

It can be written as a sum of positive squares in 4 ways, for example, as 169885156 + 350326089 = 13034^2 + 18717^2 .

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 520211245 - 2⁷ = 520211117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176082 + ... + 179011.

It is an arithmetic number, because the mean of its divisors is an integer number (78298227).

Almost surely, 2^520211245 is an apocalyptic number.

It is an amenable number.

520211245 is a deficient number, since it is larger than the sum of its proper divisors (106174571).

520211245 is a wasteful number, since it uses less digits than its factorization.

520211245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355391.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 520211245 is about 22808.1398846991. The cubic root of 520211245 is about 804.2540290543.

The spelling of 520211245 in words is "five hundred twenty million, two hundred eleven thousand, two hundred forty-five".