3015221 has 8 divisors (see below), whose sum is σ = 3304800. Its totient is φ = 2728240.

The previous prime is 3015211. The next prime is 3015247. The reversal of 3015221 is 1225103.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3015221 - 2¹⁴ = 2998837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3015196 and 3015205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3015211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2450 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (413100).

Almost surely, 2^3015221 is an apocalyptic number.

It is an amenable number.

3015221 is a deficient number, since it is larger than the sum of its proper divisors (289579).

3015221 is a wasteful number, since it uses less digits than its factorization.

3015221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 3015221 is about 1736.4391725598. The cubic root of 3015221 is about 144.4684621250.

It can be divided in two parts, 30 and 15221, that added together give a palindrome (15251).

The spelling of 3015221 in words is "three million, fifteen thousand, two hundred twenty-one".