51608918 has 8 divisors (see below), whose sum is σ = 80779248. Its totient is φ = 24682504.

The previous prime is 51608911. The next prime is 51608933. The reversal of 51608918 is 81980615.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51608911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560921 + ... + 561012.

It is an arithmetic number, because the mean of its divisors is an integer number (10097406).

Almost surely, 2^51608918 is an apocalyptic number.

51608918 is a deficient number, since it is larger than the sum of its proper divisors (29170330).

51608918 is a wasteful number, since it uses less digits than its factorization.

51608918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121958.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 51608918 is about 7183.9347157390. The cubic root of 51608918 is about 372.3130434289.

The spelling of 51608918 in words is "fifty-one million, six hundred eight thousand, nine hundred eighteen".