4277221 has 6 divisors (see below), whose sum is σ = 4631730. Its totient is φ = 3948048.

The previous prime is 4277219. The next prime is 4277227. The reversal of 4277221 is 1227724.

It can be written as a sum of positive squares in 3 ways, for example, as 12996 + 4264225 = 114^2 + 2065^2 .

It is not a de Polignac number, because 4277221 - 2¹ = 4277219 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4277227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12486 + ... + 12823.

It is an arithmetic number, because the mean of its divisors is an integer number (771955).

Almost surely, 2^4277221 is an apocalyptic number.

It is an amenable number.

4277221 is a deficient number, since it is larger than the sum of its proper divisors (354509).

4277221 is a wasteful number, since it uses less digits than its factorization.

4277221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25335 (or 25322 counting only the distinct ones).

The product of its digits is 1568, while the sum is 25.

The square root of 4277221 is about 2068.1443373227. The cubic root of 4277221 is about 162.3256797332.

The spelling of 4277221 in words is "four million, two hundred seventy-seven thousand, two hundred twenty-one".