525517 has 2 divisors, whose sum is σ = 525518. Its totient is φ = 525516.

The previous prime is 525493. The next prime is 525529. The reversal of 525517 is 715525.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385641 + 139876 = 621^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 525517 - 2¹⁹ = 1229 is a prime.

525517 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 525491 and 525500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262758 + 262759.

It is an arithmetic number, because the mean of its divisors is an integer number (262759).

2⁵²⁵⁵¹⁷ is an apocalyptic number.

It is an amenable number.

525517 is a deficient number, since it is larger than the sum of its proper divisors (1).

525517 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 13 representation: 525517 = (155275)₁₃.

525517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1750, while the sum is 25.

The square root of 525517 is about 724.9255134150. The cubic root of 525517 is about 80.6979043314.

The spelling of 525517 in words is "five hundred twenty-five thousand, five hundred seventeen".