4221057 has 4 divisors (see below), whose sum is σ = 5628080. Its totient is φ = 2814036.

The previous prime is 4221047. The next prime is 4221109. The reversal of 4221057 is 7501224.

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 not a de Polignac number, because 4221057 - 2¹⁶ = 4155521 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221047) 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, 703507 + ... + 703512.

It is an arithmetic number, because the mean of its divisors is an integer number (1407020).

Almost surely, 2^4221057 is an apocalyptic number.

It is an amenable number.

4221057 is a deficient number, since it is larger than the sum of its proper divisors (1407023).

4221057 is a wasteful number, since it uses less digits than its factorization.

4221057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407022.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 4221057 is about 2054.5211120843. The cubic root of 4221057 is about 161.6120499012.

The spelling of 4221057 in words is "four million, two hundred twenty-one thousand, fifty-seven".