520526 has 4 divisors (see below), whose sum is σ = 780792. Its totient is φ = 260262.

The previous prime is 520451. The next prime is 520529. The reversal of 520526 is 625025.

It is a happy number.

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

It is a d-powerful number, because it can be written as 5⁷ + 2¹⁰ + 5⁸ + 0 + 2¹² + 6⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 520498 and 520507.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520526.

It is not an unprimeable number, because it can be changed into a prime (520529) by changing a digit.

520526 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130130 + ... + 130133.

It is an arithmetic number, because the mean of its divisors is an integer number (195198).

2⁵²⁰⁵²⁶ is an apocalyptic number.

520526 is a deficient number, since it is larger than the sum of its proper divisors (260266).

520526 is a wasteful number, since it uses less digits than its factorization.

520526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260265.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 520526 is about 721.4748782875. The cubic root of 520526 is about 80.4416201596.

The spelling of 520526 in words is "five hundred twenty thousand, five hundred twenty-six".