526387 has 2 divisors, whose sum is σ = 526388. Its totient is φ = 526386.

The previous prime is 526381. The next prime is 526391. The reversal of 526387 is 783625.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 526387 - 2¹⁹ = 2099 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5² + 2¹⁸ + 3⁶ + 6⁴ + 8⁶ + 7² .

It is not a weakly prime, because it can be changed into another prime (526381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263193 + 263194.

It is an arithmetic number, because the mean of its divisors is an integer number (263194).

2⁵²⁶³⁸⁷ is an apocalyptic number.

526387 is a deficient number, since it is larger than the sum of its proper divisors (1).

526387 is an equidigital number, since it uses as much as digits as its factorization.

526387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 526387 is about 725.5253269184. The cubic root of 526387 is about 80.7424119111.

The spelling of 526387 in words is "five hundred twenty-six thousand, three hundred eighty-seven".