253533 has 8 divisors (see below), whose sum is σ = 386368. Its totient is φ = 144864.

The previous prime is 253531. The next prime is 253537. The reversal of 253533 is 335352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253533 - 2¹ = 253531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 12073 = 253533 / (2 + 5 + 3 + 5 + 3 + 3).

It is a Duffinian number.

253533 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6016 + ... + 6057.

It is an arithmetic number, because the mean of its divisors is an integer number (48296).

2²⁵³⁵³³ is an apocalyptic number.

It is an amenable number.

253533 is a deficient number, since it is larger than the sum of its proper divisors (132835).

253533 is a wasteful number, since it uses less digits than its factorization.

253533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12083.

The product of its digits is 1350, while the sum is 21.

The square root of 253533 is about 503.5206053381. The cubic root of 253533 is about 63.2914188658.

Adding to 253533 its reverse (335352), we get a palindrome (588885).

It can be divided in two parts, 2 and 53533, that added together give a palindrome (53535).

The spelling of 253533 in words is "two hundred fifty-three thousand, five hundred thirty-three".