4455722421 has 24 divisors (see below), whose sum is σ = 6549660000. Its totient is φ = 2918113632.

The previous prime is 4455722419. The next prime is 4455722441. The reversal of 4455722421 is 1242275544.

4455722421 is a `hidden beast` number, since 4 + 45 + 572 + 2 + 42 + 1 = 666.

It is not a de Polignac number, because 4455722421 - 2¹ = 4455722419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4455722441) 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 23 ways as a sum of consecutive naturals, for example, 1431615 + ... + 1434723.

It is an arithmetic number, because the mean of its divisors is an integer number (272902500).

Almost surely, 2^4455722421 is an apocalyptic number.

It is an amenable number.

4455722421 is a deficient number, since it is larger than the sum of its proper divisors (2093937579).

4455722421 is a wasteful number, since it uses less digits than its factorization.

4455722421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5873 (or 5870 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 4455722421 is about 66751.1978993636. The cubic root of 4455722421 is about 1645.5309023241.

Adding to 4455722421 its reverse (1242275544), we get a palindrome (5697997965).

The spelling of 4455722421 in words is "four billion, four hundred fifty-five million, seven hundred twenty-two thousand, four hundred twenty-one".