51261036 has 12 divisors (see below), whose sum is σ = 119609112. Its totient is φ = 17087008.

The previous prime is 51261019. The next prime is 51261047. The reversal of 51261036 is 63016215.

51261036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 51260997 and 51261015.

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, 2135865 + ... + 2135888.

It is an arithmetic number, because the mean of its divisors is an integer number (9967426).

Almost surely, 2^51261036 is an apocalyptic number.

It is an amenable number.

51261036 is an abundant number, since it is smaller than the sum of its proper divisors (68348076).

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

51261036 is a wasteful number, since it uses less digits than its factorization.

51261036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271760 (or 4271758 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51261036 is about 7159.6812778224. The cubic root of 51261036 is about 371.4746022693.

The spelling of 51261036 in words is "fifty-one million, two hundred sixty-one thousand, thirty-six".