3555 has 12 divisors (see below), whose sum is σ = 6240.
Its totient is φ = 1872.
The previous prime is 3547. The next prime is 3557. The reversal of 3555 is 5553.
It is not a de Polignac number, because 3555 - 23 = 3547 is a prime.
It is a nude number because it is divisible by every one of its digits.
3555 is a modest number, since divided by 55 gives 35 as remainder.
It is a plaindrome in base 10.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 3555.
It is not an unprimeable number, because it can be changed into a prime (3557) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6 + ... + 84.
It is an arithmetic number, because the mean of its divisors is an integer number (520).
23555 is an apocalyptic number.
3555 is a deficient number, since it is larger than the sum of its proper divisors (2685).
3555 is a wasteful number, since it uses less digits than its factorization.
3555 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 90 (or 87 counting only the distinct ones).
The product of its digits is 375, while the sum is 18.
The square root of 3555 is about 59.6238207431.
The cubic root of 3555 is about 15.2620615855.
The spelling of 3555 in words is "three thousand, five hundred fifty-five".