51643382 has 32 divisors (see below), whose sum is σ = 94747968. Its totient is φ = 20606976.

The previous prime is 51643381. The next prime is 51643391. The reversal of 51643382 is 28334615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51643381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21968 + ... + 24204.

It is an arithmetic number, because the mean of its divisors is an integer number (2960874).

Almost surely, 2^51643382 is an apocalyptic number.

51643382 is a deficient number, since it is larger than the sum of its proper divisors (43104586).

51643382 is a wasteful number, since it uses less digits than its factorization.

51643382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360.

The product of its digits is 17280, while the sum is 32.

The square root of 51643382 is about 7186.3330009122. Note that the first 3 decimals coincide. The cubic root of 51643382 is about 372.3959008241.

Adding to 51643382 its reverse (28334615), we get a palindrome (79977997).

It can be divided in two parts, 51643 and 382, that added together give a palindrome (52025).

The spelling of 51643382 in words is "fifty-one million, six hundred forty-three thousand, three hundred eighty-two".