51678862 has 32 divisors (see below), whose sum is σ = 82764000. Its totient is φ = 24167808.

The previous prime is 51678857. The next prime is 51678883. The reversal of 51678862 is 26887615.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a pancake number, because a pancake can be divided into 51678862 parts by 10166 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346764 + ... + 346912.

It is an arithmetic number, because the mean of its divisors is an integer number (2586375).

Almost surely, 2^51678862 is an apocalyptic number.

51678862 is a deficient number, since it is larger than the sum of its proper divisors (31085138).

51678862 is a wasteful number, since it uses less digits than its factorization.

51678862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 161280, while the sum is 43.

The square root of 51678862 is about 7188.8011517916. The cubic root of 51678862 is about 372.4811623583.

The spelling of 51678862 in words is "fifty-one million, six hundred seventy-eight thousand, eight hundred sixty-two".