524521 has 2 divisors, whose sum is σ = 524522. Its totient is φ = 524520.

The previous prime is 524519. The next prime is 524591. The reversal of 524521 is 125425.

524521 is nontrivially palindromic in base 7.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 114921 = 640^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 524521 - 2¹ = 524519 is a prime.

Together with 524519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (524591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262260 + 262261.

It is an arithmetic number, because the mean of its divisors is an integer number (262261).

2⁵²⁴⁵²¹ is an apocalyptic number.

It is an amenable number.

524521 is a deficient number, since it is larger than the sum of its proper divisors (1).

524521 is an equidigital number, since it uses as much as digits as its factorization.

524521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 19.

The square root of 524521 is about 724.2382204772. The cubic root of 524521 is about 80.6468904765.

Adding to 524521 its reverse (125425), we get a palindrome (649946).

The spelling of 524521 in words is "five hundred twenty-four thousand, five hundred twenty-one".