51608818 has 8 divisors (see below), whose sum is σ = 77464620. Its totient is φ = 25787280.

The previous prime is 51608813. The next prime is 51608839. The reversal of 51608818 is 81880615.

It can be written as a sum of positive squares in 2 ways, for example, as 50594769 + 1014049 = 7113^2 + 1007^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51608813) 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, 4393 + ... + 11068.

Almost surely, 2^51608818 is an apocalyptic number.

51608818 is a deficient number, since it is larger than the sum of its proper divisors (25855802).

51608818 is a wasteful number, since it uses less digits than its factorization.

51608818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17132.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 51608818 is about 7183.9277557615. The cubic root of 51608818 is about 372.3128029580.

The spelling of 51608818 in words is "fifty-one million, six hundred eight thousand, eight hundred eighteen".