4158221 has 8 divisors (see below), whose sum is σ = 4303584. Its totient is φ = 4015440.

The previous prime is 4158211. The next prime is 4158233. The reversal of 4158221 is 1228514.

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 4158221 - 2⁶ = 4158157 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 (4158211) 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, 2966 + ... + 4136.

It is an arithmetic number, because the mean of its divisors is an integer number (537948).

Almost surely, 2^4158221 is an apocalyptic number.

It is an amenable number.

4158221 is a deficient number, since it is larger than the sum of its proper divisors (145363).

4158221 is a wasteful number, since it uses less digits than its factorization.

4158221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its digits is 640, while the sum is 23.

The square root of 4158221 is about 2039.1716455463. The cubic root of 4158221 is about 160.8061012058.

The spelling of 4158221 in words is "four million, one hundred fifty-eight thousand, two hundred twenty-one".