51818078 has 16 divisors (see below), whose sum is σ = 83832000. Its totient is φ = 23880096.

The previous prime is 51818077. The next prime is 51818083. The reversal of 51818078 is 87081815.

It is a super-2 number, since 2×51818078² = 5370226415228168, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51818077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24923 + ... + 26921.

It is an arithmetic number, because the mean of its divisors is an integer number (5239500).

Almost surely, 2^51818078 is an apocalyptic number.

51818078 is a deficient number, since it is larger than the sum of its proper divisors (32013922).

51818078 is a wasteful number, since it uses less digits than its factorization.

51818078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011.

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 51818078 is about 7198.4774779116. The cubic root of 51818078 is about 372.8153340826.

It can be divided in two parts, 5181807 and 8, that added together give a palindrome (5181815).

The spelling of 51818078 in words is "fifty-one million, eight hundred eighteen thousand, seventy-eight".