533661533 has 8 divisors (see below), whose sum is σ = 540438840. Its totient is φ = 526968288.

The previous prime is 533661521. The next prime is 533661581. The reversal of 533661533 is 335166335.

It can be written as a sum of positive squares in 4 ways, for example, as 96098809 + 437562724 = 9803^2 + 20918^2 .

It is not a de Polignac number, because 533661533 - 2²² = 529467229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 533661493 and 533661502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533661503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704591 + ... + 705347.

It is an arithmetic number, because the mean of its divisors is an integer number (67554855).

Almost surely, 2^533661533 is an apocalyptic number.

It is an amenable number.

533661533 is a deficient number, since it is larger than the sum of its proper divisors (6777307).

533661533 is an frugal number, since it uses more digits than its factorization.

533661533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 846 counting only the distinct ones).

The product of its digits is 72900, while the sum is 35.

The square root of 533661533 is about 23101.1154059712. The cubic root of 533661533 is about 811.1265800216.

The spelling of 533661533 in words is "five hundred thirty-three million, six hundred sixty-one thousand, five hundred thirty-three".