3545 has 4 divisors (see below), whose sum is σ = 4260. Its totient is φ = 2832.

The previous prime is 3541. The next prime is 3547. The reversal of 3545 is 5453.

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

It can be written as a sum of positive squares in 2 ways, for example, as 841 + 2704 = 29^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 3545 - 2² = 3541 is a prime.

3545 is a modest number, since divided by 45 gives 35 as remainder.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (3541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350 + ... + 359.

It is an arithmetic number, because the mean of its divisors is an integer number (1065).

It is an amenable number.

3545 is a deficient number, since it is larger than the sum of its proper divisors (715).

3545 is an equidigital number, since it uses as much as digits as its factorization.

3545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714.

The product of its digits is 300, while the sum is 17.

The square root of 3545 is about 59.5399025864. The cubic root of 3545 is about 15.2477377277.

Adding to 3545 its reverse (5453), we get a palindrome (8998).

It can be divided in two parts, 354 and 5, that multiplied together give a triangular number (1770 = T₅₉).

The spelling of 3545 in words is "three thousand, five hundred forty-five".