45878321 has 4 divisors (see below), whose sum is σ = 45906672. Its totient is φ = 45849972.

The previous prime is 45878311. The next prime is 45878401. The reversal of 45878321 is 12387854.

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 a cyclic number.

It is not a de Polignac number, because 45878321 - 2¹⁰ = 45877297 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45878311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11591 + ... + 15036.

It is an arithmetic number, because the mean of its divisors is an integer number (11476668).

Almost surely, 2^45878321 is an apocalyptic number.

It is an amenable number.

45878321 is a deficient number, since it is larger than the sum of its proper divisors (28351).

45878321 is a wasteful number, since it uses less digits than its factorization.

45878321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28350.

The product of its digits is 53760, while the sum is 38.

The square root of 45878321 is about 6773.3537483288. The cubic root of 45878321 is about 357.9885793721.

The spelling of 45878321 in words is "forty-five million, eight hundred seventy-eight thousand, three hundred twenty-one".