51678376 has 8 divisors (see below), whose sum is σ = 96896970. Its totient is φ = 25839184.

The previous prime is 51678343. The next prime is 51678383. The reversal of 51678376 is 67387615.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 7986276 = 6610^2 + 2826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229891 + ... + 3229906.

Almost surely, 2^51678376 is an apocalyptic number.

It is an amenable number.

51678376 is a deficient number, since it is larger than the sum of its proper divisors (45218594).

51678376 is a wasteful number, since it uses less digits than its factorization.

51678376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459803 (or 6459799 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 51678376 is about 7188.7673491357. The cubic root of 51678376 is about 372.4799947216.

The spelling of 51678376 in words is "fifty-one million, six hundred seventy-eight thousand, three hundred seventy-six".