4445051121 has 144 divisors (see below), whose sum is σ = 8318479680. Its totient is φ = 2337310080.

The previous prime is 4445051113. The next prime is 4445051147. The reversal of 4445051121 is 1211505444.

4445051121 is a `hidden beast` number, since 4 + 44 + 505 + 112 + 1 = 666.

It is not a de Polignac number, because 4445051121 - 2³ = 4445051113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445051111) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 19581610 + ... + 19581836.

It is an arithmetic number, because the mean of its divisors is an integer number (57767220).

Almost surely, 2^4445051121 is an apocalyptic number.

4445051121 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4445051121 is a deficient number, since it is larger than the sum of its proper divisors (3873428559).

4445051121 is a wasteful number, since it uses less digits than its factorization.

4445051121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 4445051121 is about 66671.2165855701. The cubic root of 4445051121 is about 1644.2161891357.

Adding to 4445051121 its reverse (1211505444), we get a palindrome (5656556565).

The spelling of 4445051121 in words is "four billion, four hundred forty-five million, fifty-one thousand, one hundred twenty-one".