526397 has 2 divisors, whose sum is σ = 526398. Its totient is φ = 526396.

The previous prime is 526391. The next prime is 526423. The reversal of 526397 is 793625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502681 + 23716 = 709^2 + 154^2 .

It is a cyclic number.

It is not a de Polignac number, because 526397 - 2⁴ = 526381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526391) 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, 263198 + 263199.

It is an arithmetic number, because the mean of its divisors is an integer number (263199).

2⁵²⁶³⁹⁷ is an apocalyptic number.

It is an amenable number.

526397 is a deficient number, since it is larger than the sum of its proper divisors (1).

526397 is an equidigital number, since it uses as much as digits as its factorization.

526397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 526397 is about 725.5322184438. The cubic root of 526397 is about 80.7429232073.

The spelling of 526397 in words is "five hundred twenty-six thousand, three hundred ninety-seven".