405533 has 4 divisors (see below), whose sum is σ = 415008. Its totient is φ = 396060.

The previous prime is 405529. The next prime is 405541. The reversal of 405533 is 335504.

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 a cyclic number.

It is not a de Polignac number, because 405533 - 2² = 405529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4673 + ... + 4758.

It is an arithmetic number, because the mean of its divisors is an integer number (103752).

2⁴⁰⁵⁵³³ is an apocalyptic number.

405533 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

405533 is a deficient number, since it is larger than the sum of its proper divisors (9475).

405533 is an equidigital number, since it uses as much as digits as its factorization.

405533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 405533 is about 636.8147297291. The cubic root of 405533 is about 74.0188045709.

The spelling of 405533 in words is "four hundred five thousand, five hundred thirty-three".