51843321 has 24 divisors (see below), whose sum is σ = 78134784. Its totient is φ = 34350480.

The previous prime is 51843269. The next prime is 51843361. The reversal of 51843321 is 12334815.

It is a happy number.

51843321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51843321 - 2¹⁴ = 51826937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51843361) 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 23 ways as a sum of consecutive naturals, for example, 45855 + ... + 46971.

It is an arithmetic number, because the mean of its divisors is an integer number (3255616).

Almost surely, 2^51843321 is an apocalyptic number.

It is an amenable number.

51843321 is a deficient number, since it is larger than the sum of its proper divisors (26291463).

51843321 is a wasteful number, since it uses less digits than its factorization.

51843321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1311 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 51843321 is about 7200.2306213065. The cubic root of 51843321 is about 372.8758628277.

The spelling of 51843321 in words is "fifty-one million, eight hundred forty-three thousand, three hundred twenty-one".