51640334 has 8 divisors (see below), whose sum is σ = 79262040. Its totient is φ = 25219656.

The previous prime is 51640297. The next prime is 51640363. The reversal of 51640334 is 43304615.

51640334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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, 300149 + ... + 300320.

It is an arithmetic number, because the mean of its divisors is an integer number (9907755).

Almost surely, 2^51640334 is an apocalyptic number.

51640334 is a deficient number, since it is larger than the sum of its proper divisors (27621706).

51640334 is a wasteful number, since it uses less digits than its factorization.

51640334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600514.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 51640334 is about 7186.1209285678. The cubic root of 51640334 is about 372.3885743930.

Adding to 51640334 its reverse (43304615), we get a palindrome (94944949).

The spelling of 51640334 in words is "fifty-one million, six hundred forty thousand, three hundred thirty-four".