51267986 has 32 divisors (see below), whose sum is σ = 98979840. Its totient is φ = 19328400.

The previous prime is 51267967. The next prime is 51268001. The reversal of 51267986 is 68976215.

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 15 ways as a sum of consecutive naturals, for example, 596 + ... + 10143.

It is an arithmetic number, because the mean of its divisors is an integer number (3093120).

Almost surely, 2^51267986 is an apocalyptic number.

51267986 is a deficient number, since it is larger than the sum of its proper divisors (47711854).

51267986 is a wasteful number, since it uses less digits than its factorization.

51267986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10790.

The product of its digits is 181440, while the sum is 44.

The square root of 51267986 is about 7160.1666181731. The cubic root of 51267986 is about 371.4913897556.

The spelling of 51267986 in words is "fifty-one million, two hundred sixty-seven thousand, nine hundred eighty-six".