655533 has 10 divisors (see below), whose sum is σ = 979374. Its totient is φ = 436968.

The previous prime is 655531. The next prime is 655541. The reversal of 655533 is 335556.

It is a happy number.

655533 is a `hidden beast` number, since 655 + 5 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 110889 = 738^2 + 333^2 .

It is not a de Polignac number, because 655533 - 2¹ = 655531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 655497 and 655506.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655533.

It is not an unprimeable number, because it can be changed into a prime (655531) 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 9 ways as a sum of consecutive naturals, for example, 3966 + ... + 4127.

2⁶⁵⁵⁵³³ is an apocalyptic number.

It is an amenable number.

655533 is a deficient number, since it is larger than the sum of its proper divisors (323841).

655533 is an equidigital number, since it uses as much as digits as its factorization.

655533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8105 (or 8096 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 655533 is about 809.6499243500. The cubic root of 655533 is about 86.8690061941.

It can be divided in two parts, 65553 and 3, that added together give a palindrome (65556).

The spelling of 655533 in words is "six hundred fifty-five thousand, five hundred thirty-three".