45873921 has 4 divisors (see below), whose sum is σ = 61165232. Its totient is φ = 30582612.

The previous prime is 45873917. The next prime is 45873929. The reversal of 45873921 is 12937854.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45873921 - 2² = 45873917 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 45873921.

It is not an unprimeable number, because it can be changed into a prime (45873929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7645651 + ... + 7645656.

It is an arithmetic number, because the mean of its divisors is an integer number (15291308).

Almost surely, 2^45873921 is an apocalyptic number.

It is an amenable number.

45873921 is a deficient number, since it is larger than the sum of its proper divisors (15291311).

45873921 is a wasteful number, since it uses less digits than its factorization.

45873921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291310.

The product of its digits is 60480, while the sum is 39.

The square root of 45873921 is about 6773.0289383702. The cubic root of 45873921 is about 357.9771346049.

The spelling of 45873921 in words is "forty-five million, eight hundred seventy-three thousand, nine hundred twenty-one".