520965247 has 8 divisors (see below), whose sum is σ = 568496592. Its totient is φ = 473462400.

The previous prime is 520965233. The next prime is 520965293. The reversal of 520965247 is 742569025.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520965247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520960247) 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, 53797 + ... + 62737.

It is an arithmetic number, because the mean of its divisors is an integer number (71062074).

Almost surely, 2^520965247 is an apocalyptic number.

520965247 is a deficient number, since it is larger than the sum of its proper divisors (47531345).

520965247 is a wasteful number, since it uses less digits than its factorization.

520965247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14249.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 520965247 is about 22824.6631300442. The cubic root of 520965247 is about 804.6424074348.

The spelling of 520965247 in words is "five hundred twenty million, nine hundred sixty-five thousand, two hundred forty-seven".