4050221 has 4 divisors (see below), whose sum is σ = 4628832. Its totient is φ = 3471612.

The previous prime is 4050209. The next prime is 4050223. The reversal of 4050221 is 1220504.

4050221 = T₄₁₈ + T₄₁₉ + ... + T₄₅₉.

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 a de Polignac number, because none of the positive numbers 2^k-4050221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4050196 and 4050205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4050223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289295 + ... + 289308.

It is an arithmetic number, because the mean of its divisors is an integer number (1157208).

Almost surely, 2^4050221 is an apocalyptic number.

It is an amenable number.

4050221 is a deficient number, since it is larger than the sum of its proper divisors (578611).

4050221 is an equidigital number, since it uses as much as digits as its factorization.

4050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578610.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4050221 is about 2012.5160868922. The cubic root of 4050221 is about 159.4016846770.

Adding to 4050221 its reverse (1220504), we get a palindrome (5270725).

The spelling of 4050221 in words is "four million, fifty thousand, two hundred twenty-one".