525871 has 2 divisors, whose sum is σ = 525872. Its totient is φ = 525870.

The previous prime is 525869. The next prime is 525887. The reversal of 525871 is 178525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525871 - 2¹ = 525869 is a prime.

Together with 525869, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262935 + 262936.

It is an arithmetic number, because the mean of its divisors is an integer number (262936).

2⁵²⁵⁸⁷¹ is an apocalyptic number.

525871 is a deficient number, since it is larger than the sum of its proper divisors (1).

525871 is an equidigital number, since it uses as much as digits as its factorization.

525871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 28.

The square root of 525871 is about 725.1696353268. The cubic root of 525871 is about 80.7160202350.

It can be divided in two parts, 5258 and 71, that added together give a square (5329 = 73²).

The spelling of 525871 in words is "five hundred twenty-five thousand, eight hundred seventy-one".