4220257 has 8 divisors (see below), whose sum is σ = 4366656. Its totient is φ = 4075632.

The previous prime is 4220243. The next prime is 4220269. The reversal of 4220257 is 7520224.

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 4220257 - 2¹⁵ = 4187489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4220207) 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, 5838 + ... + 6520.

It is an arithmetic number, because the mean of its divisors is an integer number (545832).

Almost surely, 2^4220257 is an apocalyptic number.

It is an amenable number.

4220257 is a deficient number, since it is larger than the sum of its proper divisors (146399).

4220257 is a wasteful number, since it uses less digits than its factorization.

4220257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 4220257 is about 2054.3264102863. The cubic root of 4220257 is about 161.6018393616.

The spelling of 4220257 in words is "four million, two hundred twenty thousand, two hundred fifty-seven".