406533 has 4 divisors (see below), whose sum is σ = 542048. Its totient is φ = 271020.

The previous prime is 406531. The next prime is 406547. The reversal of 406533 is 335604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 406533 - 2¹ = 406531 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406531) 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 3 ways as a sum of consecutive naturals, for example, 67753 + ... + 67758.

It is an arithmetic number, because the mean of its divisors is an integer number (135512).

2⁴⁰⁶⁵³³ is an apocalyptic number.

It is an amenable number.

406533 is a deficient number, since it is larger than the sum of its proper divisors (135515).

406533 is a wasteful number, since it uses less digits than its factorization.

406533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135514.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 406533 is about 637.5994040148. The cubic root of 406533 is about 74.0795953878.

It can be divided in two parts, 406 and 533, that added together give a palindrome (939).

The spelling of 406533 in words is "four hundred six thousand, five hundred thirty-three".