520601311 has 8 divisors (see below), whose sum is σ = 548218880. Its totient is φ = 493005528.

The previous prime is 520601293. The next prime is 520601327. The reversal of 520601311 is 113106025.

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 520601311 - 2⁹ = 520600799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520601371) 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, 71920 + ... + 78826.

It is an arithmetic number, because the mean of its divisors is an integer number (68527360).

Almost surely, 2^520601311 is an apocalyptic number.

520601311 is a deficient number, since it is larger than the sum of its proper divisors (27617569).

520601311 is a wasteful number, since it uses less digits than its factorization.

520601311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10893.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 520601311 is about 22816.6893084865. The cubic root of 520601311 is about 804.4549947057.

Adding to 520601311 its reverse (113106025), we get a palindrome (633707336).

The spelling of 520601311 in words is "five hundred twenty million, six hundred one thousand, three hundred eleven".