48821321 has 4 divisors (see below), whose sum is σ = 49742532. Its totient is φ = 47900112.

The previous prime is 48821299. The next prime is 48821323. The reversal of 48821321 is 12312884.

48821321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29855296 + 18966025 = 5464^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 48821321 - 2¹⁴ = 48804937 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (48821323) 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 3 ways as a sum of consecutive naturals, for example, 460526 + ... + 460631.

It is an arithmetic number, because the mean of its divisors is an integer number (12435633).

Almost surely, 2^48821321 is an apocalyptic number.

It is an amenable number.

48821321 is a deficient number, since it is larger than the sum of its proper divisors (921211).

48821321 is an equidigital number, since it uses as much as digits as its factorization.

48821321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921210.

The product of its digits is 3072, while the sum is 29.

The square root of 48821321 is about 6987.2255581168. The cubic root of 48821321 is about 365.4852394071.

The spelling of 48821321 in words is "forty-eight million, eight hundred twenty-one thousand, three hundred twenty-one".