405355 has 4 divisors (see below), whose sum is σ = 486432. Its totient is φ = 324280.

The previous prime is 405347. The next prime is 405373. The reversal of 405355 is 553504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 405355 - 2³ = 405347 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40531 + ... + 40540.

It is an arithmetic number, because the mean of its divisors is an integer number (121608).

2⁴⁰⁵³⁵⁵ is an apocalyptic number.

405355 is a deficient number, since it is larger than the sum of its proper divisors (81077).

405355 is an equidigital number, since it uses as much as digits as its factorization.

405355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81076.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 405355 is about 636.6749563160. The cubic root of 405355 is about 74.0079733313.

Adding to 405355 its reverse (553504), we get a palindrome (958859).

The spelling of 405355 in words is "four hundred five thousand, three hundred fifty-five".