45321839 has 4 divisors (see below), whose sum is σ = 45389856. Its totient is φ = 45253824.

The previous prime is 45321827. The next prime is 45321877. The reversal of 45321839 is 93812354.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45321839 - 2²⁰ = 44273263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45321799 and 45321808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45321139) 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, 32999 + ... + 34344.

It is an arithmetic number, because the mean of its divisors is an integer number (11347464).

Almost surely, 2^45321839 is an apocalyptic number.

45321839 is a deficient number, since it is larger than the sum of its proper divisors (68017).

45321839 is an equidigital number, since it uses as much as digits as its factorization.

45321839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68016.

The product of its digits is 25920, while the sum is 35.

The square root of 45321839 is about 6732.1496566847. The cubic root of 45321839 is about 356.5352776401.

The spelling of 45321839 in words is "forty-five million, three hundred twenty-one thousand, eight hundred thirty-nine".