51392278 has 12 divisors (see below), whose sum is σ = 89674452. Its totient is φ = 22025220.

The previous prime is 51392251. The next prime is 51392279. The reversal of 51392278 is 87229315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51392279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262108 + ... + 262303.

It is an arithmetic number, because the mean of its divisors is an integer number (7472871).

Almost surely, 2^51392278 is an apocalyptic number.

51392278 is a deficient number, since it is larger than the sum of its proper divisors (38282174).

51392278 is a wasteful number, since it uses less digits than its factorization.

51392278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524427 (or 524420 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 51392278 is about 7168.8407710034. The cubic root of 51392278 is about 371.7913569668.

The spelling of 51392278 in words is "fifty-one million, three hundred ninety-two thousand, two hundred seventy-eight".