2955221 has 4 divisors (see below), whose sum is σ = 2974944. Its totient is φ = 2935500.

The previous prime is 2955217. The next prime is 2955223. The reversal of 2955221 is 1225592.

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.

It is a cyclic number.

It is not a de Polignac number, because 2955221 - 2² = 2955217 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 (2955223) 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, 9635 + ... + 9936.

It is an arithmetic number, because the mean of its divisors is an integer number (743736).

2^2955221 is an apocalyptic number.

It is an amenable number.

2955221 is a deficient number, since it is larger than the sum of its proper divisors (19723).

2955221 is a wasteful number, since it uses less digits than its factorization.

2955221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19722.

The product of its digits is 1800, while the sum is 26.

The square root of 2955221 is about 1719.0756237001. The cubic root of 2955221 is about 143.5037735697.

The spelling of 2955221 in words is "two million, nine hundred fifty-five thousand, two hundred twenty-one".