405575 has 6 divisors (see below), whose sum is σ = 502944. Its totient is φ = 324440.

The previous prime is 405553. The next prime is 405577. The reversal of 405575 is 575504.

It is a de Polignac number, because none of the positive numbers 2^k-405575 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8087 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (83824).

2⁴⁰⁵⁵⁷⁵ is an apocalyptic number.

405575 is a deficient number, since it is larger than the sum of its proper divisors (97369).

405575 is a wasteful number, since it uses less digits than its factorization.

405575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16233 (or 16228 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 405575 is about 636.8477054995. The cubic root of 405575 is about 74.0213597945.

The spelling of 405575 in words is "four hundred five thousand, five hundred seventy-five".