525397 has 2 divisors, whose sum is σ = 525398. Its totient is φ = 525396.

The previous prime is 525391. The next prime is 525409. The reversal of 525397 is 793525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269361 + 256036 = 519^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 525397 - 2¹¹ = 523349 is a prime.

It is a d-powerful number, because it can be written as 5³ + 2¹⁹ + 3⁶ + 5³ + 9² + 7² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262698 + 262699.

It is an arithmetic number, because the mean of its divisors is an integer number (262699).

2⁵²⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

525397 is a deficient number, since it is larger than the sum of its proper divisors (1).

525397 is an equidigital number, since it uses as much as digits as its factorization.

525397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 31.

The square root of 525397 is about 724.8427415654. The cubic root of 525397 is about 80.6917615008.

The spelling of 525397 in words is "five hundred twenty-five thousand, three hundred ninety-seven".