51786801 has 24 divisors (see below), whose sum is σ = 81831360. Its totient is φ = 31298400.

The previous prime is 51786793. The next prime is 51786817. The reversal of 51786801 is 10868715.

It is not a de Polignac number, because 51786801 - 2³ = 51786793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51786821) 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 23 ways as a sum of consecutive naturals, for example, 62055 + ... + 62883.

It is an arithmetic number, because the mean of its divisors is an integer number (3409640).

Almost surely, 2^51786801 is an apocalyptic number.

It is an amenable number.

51786801 is a deficient number, since it is larger than the sum of its proper divisors (30044559).

51786801 is a wasteful number, since it uses less digits than its factorization.

51786801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 51786801 is about 7196.3046767073. The cubic root of 51786801 is about 372.7403094804.

The spelling of 51786801 in words is "fifty-one million, seven hundred eighty-six thousand, eight hundred one".