525213 has 18 divisors (see below), whose sum is σ = 829374. Its totient is φ = 318384.

The previous prime is 525209. The next prime is 525221. The reversal of 525213 is 312525.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 161604 = 603^2 + 402^2 .

It is not a de Polignac number, because 525213 - 2² = 525209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525253) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7806 + ... + 7872.

2⁵²⁵²¹³ is an apocalyptic number.

It is an amenable number.

525213 is a deficient number, since it is larger than the sum of its proper divisors (304161).

525213 is a wasteful number, since it uses less digits than its factorization.

525213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 83 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 525213 is about 724.7158063683. The cubic root of 525213 is about 80.6823406770.

Adding to 525213 its reverse (312525), we get a palindrome (837738).

The spelling of 525213 in words is "five hundred twenty-five thousand, two hundred thirteen".