355555 has 16 divisors (see below), whose sum is σ = 466560. Its totient is φ = 259072.

The previous prime is 355549. The next prime is 355559. The reversal of 355555 is 555553.

It is a cyclic number.

It is not a de Polignac number, because 355555 - 2⁷ = 355427 is a prime.

355555 is a modest number, since divided by 555 gives 355 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3951 + ... + 4039.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2³⁵⁵⁵⁵⁵ is an apocalyptic number.

355555 is a deficient number, since it is larger than the sum of its proper divisors (111005).

355555 is a wasteful number, since it uses less digits than its factorization.

355555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158.

The product of its digits is 9375, while the sum is 28.

The square root of 355555 is about 596.2843281523. The cubic root of 355555 is about 70.8438677143.

The spelling of 355555 in words is "three hundred fifty-five thousand, five hundred fifty-five".