525330 has 48 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 129024.

The previous prime is 525313. The next prime is 525353. The reversal of 525330 is 33525.

It can be written as a sum of positive squares in 4 ways, for example, as 356409 + 168921 = 597^2 + 411^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 946 + ... + 1394.

2⁵²⁵³³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737100).

525330 is an abundant number, since it is smaller than the sum of its proper divisors (948870).

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

525330 is a wasteful number, since it uses less digits than its factorization.

525330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 525330 is about 724.7965231705. The cubic root of 525330 is about 80.6883313468.

Adding to 525330 its reverse (33525), we get a palindrome (558855).

The spelling of 525330 in words is "five hundred twenty-five thousand, three hundred thirty".