51278860 has 12 divisors (see below), whose sum is σ = 107685648. Its totient is φ = 20511536.

The previous prime is 51278837. The next prime is 51278879. The reversal of 51278860 is 6887215.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1281952 + ... + 1281991.

It is an arithmetic number, because the mean of its divisors is an integer number (8973804).

Almost surely, 2^51278860 is an apocalyptic number.

It is an amenable number.

51278860 is an abundant number, since it is smaller than the sum of its proper divisors (56406788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51278860 is a wasteful number, since it uses less digits than its factorization.

51278860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563952 (or 2563950 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 51278860 is about 7160.9259177847. The cubic root of 51278860 is about 371.5176524854.

The spelling of 51278860 in words is "fifty-one million, two hundred seventy-eight thousand, eight hundred sixty".