561529 has 2 divisors, whose sum is σ = 561530. Its totient is φ = 561528.

The previous prime is 561521. The next prime is 561551. The reversal of 561529 is 925165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559504 + 2025 = 748^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 561529 - 2³ = 561521 is a prime.

It is a Chen prime.

561529 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 561497 and 561506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280764 + 280765.

It is an arithmetic number, because the mean of its divisors is an integer number (280765).

2⁵⁶¹⁵²⁹ is an apocalyptic number.

It is an amenable number.

561529 is a deficient number, since it is larger than the sum of its proper divisors (1).

561529 is an equidigital number, since it uses as much as digits as its factorization.

561529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 28.

The square root of 561529 is about 749.3523870650. The cubic root of 561529 is about 82.5006550300.

The spelling of 561529 in words is "five hundred sixty-one thousand, five hundred twenty-nine".