51261048 has 24 divisors (see below), whose sum is σ = 138832200. Its totient is φ = 17086992.

The previous prime is 51261047. The next prime is 51261053. The reversal of 51261048 is 84016215.

51261048 is a `hidden beast` number, since 5 + 1 + 2 + 610 + 48 = 666.

51261048 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 (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51261047) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 355908 + ... + 356051.

It is an arithmetic number, because the mean of its divisors is an integer number (5784675).

Almost surely, 2^51261048 is an apocalyptic number.

It is an amenable number.

51261048 is an abundant number, since it is smaller than the sum of its proper divisors (87571152).

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

51261048 is a wasteful number, since it uses less digits than its factorization.

51261048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711971 (or 711964 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 51261048 is about 7159.6821158484. The cubic root of 51261048 is about 371.4746312562.

The spelling of 51261048 in words is "fifty-one million, two hundred sixty-one thousand, forty-eight".