525500 has 24 divisors (see below), whose sum is σ = 1148784. Its totient is φ = 210000.

The previous prime is 525493. The next prime is 525517. The reversal of 525500 is 5525.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

525500 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (47866).

2⁵²⁵⁵⁰⁰ is an apocalyptic number.

525500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574392).

525500 is an abundant number, since it is smaller than the sum of its proper divisors (623284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525500 is a wasteful number, since it uses less digits than its factorization.

525500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 17.

The square root of 525500 is about 724.9137879776. The cubic root of 525500 is about 80.6970341539.

The spelling of 525500 in words is "five hundred twenty-five thousand, five hundred".