533561 has 6 divisors (see below), whose sum is σ = 620730. Its totient is φ = 457296.

The previous prime is 533549. The next prime is 533573. The reversal of 533561 is 165335.

Added to its reverse (165335) it gives a square (698896 = 836²).

It is an interprime number because it is at equal distance from previous prime (533549) and next prime (533573).

It can be written as a sum of positive squares in only one way, i.e., 313600 + 219961 = 560^2 + 469^2 .

It is not a de Polignac number, because 533561 - 2¹⁰ = 532537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (533581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5396 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (103455).

2⁵³³⁵⁶¹ is an apocalyptic number.

It is an amenable number.

533561 is a deficient number, since it is larger than the sum of its proper divisors (87169).

533561 is a wasteful number, since it uses less digits than its factorization.

533561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10903 (or 10896 counting only the distinct ones).

The product of its digits is 1350, while the sum is 23.

The square root of 533561 is about 730.4525994204. The cubic root of 533561 is about 81.1075642549.

Adding to 533561 its reverse (165335), we get a palindrome (698896).

The spelling of 533561 in words is "five hundred thirty-three thousand, five hundred sixty-one".