405055 has 16 divisors (see below), whose sum is σ = 566784. Its totient is φ = 272160.

The previous prime is 405049. The next prime is 405071. The reversal of 405055 is 550504.

It is a happy number.

It is not a de Polignac number, because 405055 - 2³ = 405047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2404 + ... + 2566.

It is an arithmetic number, because the mean of its divisors is an integer number (35424).

2⁴⁰⁵⁰⁵⁵ is an apocalyptic number.

405055 is a deficient number, since it is larger than the sum of its proper divisors (161729).

405055 is a wasteful number, since it uses less digits than its factorization.

405055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 405055 is about 636.4393136820. The cubic root of 405055 is about 73.9897112552.

Adding to 405055 its reverse (550504), we get a palindrome (955559).

The spelling of 405055 in words is "four hundred five thousand, fifty-five".