45443121 has 8 divisors (see below), whose sum is σ = 60941760. Its totient is φ = 30119952.

The previous prime is 45443113. The next prime is 45443137. The reversal of 45443121 is 12134454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45443121 - 2³ = 45443113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45443091 and 45443100.

It is not an unprimeable number, because it can be changed into a prime (45443191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43261 + ... + 44298.

It is an arithmetic number, because the mean of its divisors is an integer number (7617720).

Almost surely, 2^45443121 is an apocalyptic number.

It is an amenable number.

45443121 is a deficient number, since it is larger than the sum of its proper divisors (15498639).

45443121 is a wasteful number, since it uses less digits than its factorization.

45443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87735.

The product of its digits is 1920, while the sum is 24.

The square root of 45443121 is about 6741.1513111634. The cubic root of 45443121 is about 356.8530258327.

Adding to 45443121 its reverse (12134454), we get a palindrome (57577575).

The spelling of 45443121 in words is "forty-five million, four hundred forty-three thousand, one hundred twenty-one".