526289 has 2 divisors, whose sum is σ = 526290. Its totient is φ = 526288.

The previous prime is 526283. The next prime is 526291. The reversal of 526289 is 982625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 43264 = 695^2 + 208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-526289 is a prime.

It is a super-2 number, since 2×526289² = 553960223042, which contains 22 as substring.

Together with 526291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (526283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263144 + 263145.

It is an arithmetic number, because the mean of its divisors is an integer number (263145).

2⁵²⁶²⁸⁹ is an apocalyptic number.

It is an amenable number.

526289 is a deficient number, since it is larger than the sum of its proper divisors (1).

526289 is an equidigital number, since it uses as much as digits as its factorization.

526289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 526289 is about 725.4577865045. The cubic root of 526289 is about 80.7374008657.

The spelling of 526289 in words is "five hundred twenty-six thousand, two hundred eighty-nine".