45782321 has 8 divisors (see below), whose sum is σ = 49578984. Its totient is φ = 42024960.

The previous prime is 45782287. The next prime is 45782333. The reversal of 45782321 is 12328754.

45782321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30625 + 45751696 = 175^2 + 6764^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 45782321 - 2¹⁸ = 45520177 is a prime.

It is a super-2 number, since 2×45782321² = 4192041832294082, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45782021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7376 + ... + 12081.

It is an arithmetic number, because the mean of its divisors is an integer number (6197373).

Almost surely, 2^45782321 is an apocalyptic number.

It is an amenable number.

45782321 is a deficient number, since it is larger than the sum of its proper divisors (3796663).

45782321 is a wasteful number, since it uses less digits than its factorization.

45782321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19651.

The product of its digits is 13440, while the sum is 32.

The square root of 45782321 is about 6766.2634444721. The cubic root of 45782321 is about 357.7387089787.

The spelling of 45782321 in words is "forty-five million, seven hundred eighty-two thousand, three hundred twenty-one".