522013 has 4 divisors (see below), whose sum is σ = 523900. Its totient is φ = 520128.

The previous prime is 521999. The next prime is 522017. The reversal of 522013 is 310225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158404 + 363609 = 398^2 + 603^2 .

It is a cyclic number.

It is not a de Polignac number, because 522013 - 2⁵ = 521981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521984 and 522002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 1111.

It is an arithmetic number, because the mean of its divisors is an integer number (130975).

2⁵²²⁰¹³ is an apocalyptic number.

It is an amenable number.

522013 is a deficient number, since it is larger than the sum of its proper divisors (1887).

522013 is a wasteful number, since it uses less digits than its factorization.

522013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 522013 is about 722.5046712652. The cubic root of 522013 is about 80.5181472146.

Adding to 522013 its reverse (310225), we get a palindrome (832238).

The spelling of 522013 in words is "five hundred twenty-two thousand, thirteen".