3055221 has 12 divisors (see below), whose sum is σ = 4752748. Its totient is φ = 1880064.

The previous prime is 3055211. The next prime is 3055229. The reversal of 3055221 is 1225503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1134225 + 1920996 = 1065^2 + 1386^2 .

It is not a de Polignac number, because 3055221 - 2⁷ = 3055093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3055194 and 3055203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3055229) 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, 12940 + ... + 13173.

Almost surely, 2^3055221 is an apocalyptic number.

It is an amenable number.

3055221 is a deficient number, since it is larger than the sum of its proper divisors (1697527).

3055221 is a wasteful number, since it uses less digits than its factorization.

3055221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26132 (or 26129 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 3055221 is about 1747.9190484688. The cubic root of 3055221 is about 145.1044985918.

The spelling of 3055221 in words is "three million, fifty-five thousand, two hundred twenty-one".