523489 has 2 divisors, whose sum is σ = 523490. Its totient is φ = 523488.

The previous prime is 523487. The next prime is 523493. The reversal of 523489 is 984325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 33489 = 700^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 523489 - 2¹ = 523487 is a prime.

Together with 523487, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 523489.

It is not a weakly prime, because it can be changed into another prime (523487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261744 + 261745.

It is an arithmetic number, because the mean of its divisors is an integer number (261745).

2⁵²³⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

523489 is a deficient number, since it is larger than the sum of its proper divisors (1).

523489 is an equidigital number, since it uses as much as digits as its factorization.

523489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 523489 is about 723.5253969281. The cubic root of 523489 is about 80.5939645787.

The spelling of 523489 in words is "five hundred twenty-three thousand, four hundred eighty-nine".