51314678 has 4 divisors (see below), whose sum is σ = 76972020. Its totient is φ = 25657338.

The previous prime is 51314677. The next prime is 51314749. The reversal of 51314678 is 87641315.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51314677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12828668 + ... + 12828671.

It is an arithmetic number, because the mean of its divisors is an integer number (19243005).

Almost surely, 2^51314678 is an apocalyptic number.

51314678 is a deficient number, since it is larger than the sum of its proper divisors (25657342).

51314678 is a wasteful number, since it uses less digits than its factorization.

51314678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25657341.

The product of its digits is 20160, while the sum is 35.

The square root of 51314678 is about 7163.4264147822. The cubic root of 51314678 is about 371.6041333614.

The spelling of 51314678 in words is "fifty-one million, three hundred fourteen thousand, six hundred seventy-eight".