51852321 has 12 divisors (see below), whose sum is σ = 74987172. Its totient is φ = 34526976.

The previous prime is 51852313. The next prime is 51852323. The reversal of 51852321 is 12325815.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48108096 + 3744225 = 6936^2 + 1935^2 .

It is not a de Polignac number, because 51852321 - 2³ = 51852313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51852323) 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 11 ways as a sum of consecutive naturals, for example, 5845 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (6248931).

Almost surely, 2^51852321 is an apocalyptic number.

It is an amenable number.

51852321 is a deficient number, since it is larger than the sum of its proper divisors (23134851).

51852321 is a wasteful number, since it uses less digits than its factorization.

51852321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880 (or 6877 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 51852321 is about 7200.8555741662. The cubic root of 51852321 is about 372.8974386613.

The spelling of 51852321 in words is "fifty-one million, eight hundred fifty-two thousand, three hundred twenty-one".