3495221 has 4 divisors (see below), whose sum is σ = 3679200. Its totient is φ = 3311244.

The previous prime is 3495181. The next prime is 3495229. The reversal of 3495221 is 1225943.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1225943 = 53 ⋅23131.

It is a de Polignac number, because none of the positive numbers 2^k-3495221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3495229) 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, 91961 + ... + 91998.

It is an arithmetic number, because the mean of its divisors is an integer number (919800).

Almost surely, 2^3495221 is an apocalyptic number.

It is an amenable number.

3495221 is a deficient number, since it is larger than the sum of its proper divisors (183979).

3495221 is a wasteful number, since it uses less digits than its factorization.

3495221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183978.

The product of its digits is 2160, while the sum is 26.

The square root of 3495221 is about 1869.5510156185. The cubic root of 3495221 is about 151.7603130286.

The spelling of 3495221 in words is "three million, four hundred ninety-five thousand, two hundred twenty-one".