525506 has 8 divisors (see below), whose sum is σ = 796224. Its totient is φ = 260100.

The previous prime is 525493. The next prime is 525517. The reversal of 525506 is 605525.

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

It is a nialpdrome in base 14.

It is an unprimeable number.

525506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (99528).

2⁵²⁵⁵⁰⁶ is an apocalyptic number.

525506 is a deficient number, since it is larger than the sum of its proper divisors (270718).

525506 is a wasteful number, since it uses less digits than its factorization.

525506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 525506 is about 724.9179263889. The cubic root of 525506 is about 80.6973412775.

The spelling of 525506 in words is "five hundred twenty-five thousand, five hundred six".