525243 has 4 divisors (see below), whose sum is σ = 700328. Its totient is φ = 350160.

The previous prime is 525241. The next prime is 525247. The reversal of 525243 is 342525.

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

It is not a de Polignac number, because 525243 - 2¹ = 525241 is a prime.

It is a d-powerful number, because it can be written as 5 + 2⁵ + 2¹⁹ + 5³ + 4³ + 3⁶ .

It is a D-number.

It is a Duffinian number.

525243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (525241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87538 + ... + 87543.

It is an arithmetic number, because the mean of its divisors is an integer number (175082).

2⁵²⁵²⁴³ is an apocalyptic number.

525243 is a deficient number, since it is larger than the sum of its proper divisors (175085).

525243 is a wasteful number, since it uses less digits than its factorization.

525243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175084.

The product of its digits is 1200, while the sum is 21.

The square root of 525243 is about 724.7365038412. The cubic root of 525243 is about 80.6838768310.

Adding to 525243 its reverse (342525), we get a palindrome (867768).

The spelling of 525243 in words is "five hundred twenty-five thousand, two hundred forty-three".