4220451 has 24 divisors (see below), whose sum is σ = 6614160. Its totient is φ = 2659392.

The previous prime is 4220449. The next prime is 4220473. The reversal of 4220451 is 1540224.

It is not a de Polignac number, because 4220451 - 2¹ = 4220449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4220441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9531 + ... + 9963.

It is an arithmetic number, because the mean of its divisors is an integer number (275590).

Almost surely, 2^4220451 is an apocalyptic number.

4220451 is a deficient number, since it is larger than the sum of its proper divisors (2393709).

4220451 is a wasteful number, since it uses less digits than its factorization.

4220451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4220451 is about 2054.3736271672. The cubic root of 4220451 is about 161.6043155360.

Adding to 4220451 its reverse (1540224), we get a palindrome (5760675).

The spelling of 4220451 in words is "four million, two hundred twenty thousand, four hundred fifty-one".