4455721023 has 32 divisors (see below), whose sum is σ = 6691797504. Its totient is φ = 2616611712.

The previous prime is 4455720953. The next prime is 4455721087. The reversal of 4455721023 is 3201275544.

It is not a de Polignac number, because 4455721023 - 2⁸ = 4455720767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4455721223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391765 + ... + 402977.

It is an arithmetic number, because the mean of its divisors is an integer number (209118672).

Almost surely, 2^4455721023 is an apocalyptic number.

4455721023 is a deficient number, since it is larger than the sum of its proper divisors (2236076481).

4455721023 is a wasteful number, since it uses less digits than its factorization.

4455721023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11695.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 4455721023 is about 66751.1874276406. The cubic root of 4455721023 is about 1645.5307302269.

Adding to 4455721023 its reverse (3201275544), we get a palindrome (7656996567).

The spelling of 4455721023 in words is "four billion, four hundred fifty-five million, seven hundred twenty-one thousand, twenty-three".