405534 has 8 divisors (see below), whose sum is σ = 811080. Its totient is φ = 135176.

The previous prime is 405529. The next prime is 405541. The reversal of 405534 is 435504.

It is a happy number.

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

405534 is an admirable number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 405534.

It is a congruent number.

It is an unprimeable number.

405534 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33789 + ... + 33800.

It is an arithmetic number, because the mean of its divisors is an integer number (101385).

2⁴⁰⁵⁵³⁴ is an apocalyptic number.

405534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405534 is a wasteful number, since it uses less digits than its factorization.

405534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67594.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 405534 is about 636.8155148864. The cubic root of 405534 is about 74.0188654117.

It can be divided in two parts, 405 and 534, that added together give a palindrome (939).

The spelling of 405534 in words is "four hundred five thousand, five hundred thirty-four".