4220546401 has 4 divisors (see below), whose sum is σ = 4221194692. Its totient is φ = 4219898112.

The previous prime is 4220546387. The next prime is 4220546417. The reversal of 4220546401 is 1046450224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2915892001 + 1304654400 = 53999^2 + 36120^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220546401 - 2¹¹ = 4220544353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4220546401.

It is not an unprimeable number, because it can be changed into a prime (4220546441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314280 + ... + 327433.

It is an arithmetic number, because the mean of its divisors is an integer number (1055298673).

Almost surely, 2^4220546401 is an apocalyptic number.

It is an amenable number.

4220546401 is a deficient number, since it is larger than the sum of its proper divisors (648291).

4220546401 is an equidigital number, since it uses as much as digits as its factorization.

4220546401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648290.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 4220546401 is about 64965.7325133797. The cubic root of 4220546401 is about 1616.0553318605.

Adding to 4220546401 its reverse (1046450224), we get a palindrome (5266996625).

The spelling of 4220546401 in words is "four billion, two hundred twenty million, five hundred forty-six thousand, four hundred one".