525813 has 8 divisors (see below), whose sum is σ = 714528. Its totient is φ = 343824.

The previous prime is 525809. The next prime is 525817. The reversal of 525813 is 318525.

It is an interprime number because it is at equal distance from previous prime (525809) and next prime (525817).

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

It is not a de Polignac number, because 525813 - 2² = 525809 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525813.

It is not an unprimeable number, because it can be changed into a prime (525817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (89316).

2⁵²⁵⁸¹³ is an apocalyptic number.

525813 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

525813 is a deficient number, since it is larger than the sum of its proper divisors (188715).

525813 is a wasteful number, since it uses less digits than its factorization.

525813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363.

The product of its digits is 1200, while the sum is 24.

The square root of 525813 is about 725.1296435811. The cubic root of 525813 is about 80.7130526496.

The spelling of 525813 in words is "five hundred twenty-five thousand, eight hundred thirteen".