51081048 has 48 divisors (see below), whose sum is σ = 138704280. Its totient is φ = 16982784.

The previous prime is 51081047. The next prime is 51081059. The reversal of 51081048 is 84018015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51081047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38736 + ... + 40032.

Almost surely, 2^51081048 is an apocalyptic number.

It is an amenable number.

51081048 is an abundant number, since it is smaller than the sum of its proper divisors (87623232).

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

51081048 is a wasteful number, since it uses less digits than its factorization.

51081048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 51081048 is about 7147.1006709015. The cubic root of 51081048 is about 371.0393179342.

The spelling of 51081048 in words is "fifty-one million, eighty-one thousand, forty-eight".