51396278 has 8 divisors (see below), whose sum is σ = 77683320. Its totient is φ = 25501840.

The previous prime is 51396269. The next prime is 51396299. The reversal of 51396278 is 87269315.

51396278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97823 + ... + 98346.

It is an arithmetic number, because the mean of its divisors is an integer number (9710415).

Almost surely, 2^51396278 is an apocalyptic number.

51396278 is a deficient number, since it is larger than the sum of its proper divisors (26287042).

51396278 is a wasteful number, since it uses less digits than its factorization.

51396278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196302.

The product of its digits is 90720, while the sum is 41.

The square root of 51396278 is about 7169.1197507086. The cubic root of 51396278 is about 371.8010025588.

The spelling of 51396278 in words is "fifty-one million, three hundred ninety-six thousand, two hundred seventy-eight".