3545215 has 4 divisors (see below), whose sum is σ = 4254264. Its totient is φ = 2836168.

The previous prime is 3545209. The next prime is 3545219. The reversal of 3545215 is 5125453.

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

It is a cyclic number.

It is not a de Polignac number, because 3545215 - 2³ = 3545207 is a prime.

It is a Duffinian number.

3545215 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3545215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3545219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354517 + ... + 354526.

It is an arithmetic number, because the mean of its divisors is an integer number (1063566).

Almost surely, 2^3545215 is an apocalyptic number.

3545215 is a deficient number, since it is larger than the sum of its proper divisors (709049).

3545215 is an equidigital number, since it uses as much as digits as its factorization.

3545215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709048.

The product of its digits is 3000, while the sum is 25.

The square root of 3545215 is about 1882.8741328087. The cubic root of 3545215 is about 152.4804597377.

The spelling of 3545215 in words is "three million, five hundred forty-five thousand, two hundred fifteen".