4421506345 has 8 divisors (see below), whose sum is σ = 5306237064. Its totient is φ = 3536918784.

The previous prime is 4421506339. The next prime is 4421506351. The reversal of 4421506345 is 5436051244.

It is an interprime number because it is at equal distance from previous prime (4421506339) and next prime (4421506351).

It can be written as a sum of positive squares in 4 ways, for example, as 3493755664 + 927750681 = 59108^2 + 30459^2 .

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 4421506345 - 2⁹ = 4421505833 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 4421506345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51537 + ... + 107233.

It is an arithmetic number, because the mean of its divisors is an integer number (663279633).

Almost surely, 2^4421506345 is an apocalyptic number.

It is an amenable number.

4421506345 is a deficient number, since it is larger than the sum of its proper divisors (884730719).

4421506345 is a wasteful number, since it uses less digits than its factorization.

4421506345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71579.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 4421506345 is about 66494.4083739377. The cubic root of 4421506345 is about 1641.3079919461.

Adding to 4421506345 its reverse (5436051244), we get a palindrome (9857557589).

The spelling of 4421506345 in words is "four billion, four hundred twenty-one million, five hundred six thousand, three hundred forty-five".