3735221 has 12 divisors (see below), whose sum is σ = 4487040. Its totient is φ = 3097080.

The previous prime is 3735217. The next prime is 3735227. The reversal of 3735221 is 1225373.

It is not a de Polignac number, because 3735221 - 2² = 3735217 is a prime.

It is a d-powerful number, because it can be written as 3¹¹ + 7⁴ + 3¹³ + 5⁹ + 2⁵ + 2¹³ + 1 .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3735227) 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, 290 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (373920).

Almost surely, 2^3735221 is an apocalyptic number.

3735221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3735221 is a deficient number, since it is larger than the sum of its proper divisors (751819).

3735221 is a wasteful number, since it uses less digits than its factorization.

3735221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504 (or 2497 counting only the distinct ones).

The product of its digits is 1260, while the sum is 23.

The square root of 3735221 is about 1932.6719845851. The cubic root of 3735221 is about 155.1572597484.

It can be divided in two parts, 37352 and 21, that added together give a palindrome (37373).

The spelling of 3735221 in words is "three million, seven hundred thirty-five thousand, two hundred twenty-one".