51840048 has 40 divisors (see below), whose sum is σ = 144223408. Its totient is φ = 15950592.

The previous prime is 51840043. The next prime is 51840049. The reversal of 51840048 is 84004815.

It is a junction number, because it is equal to n+sod(n) for n = 51839997 and 51840024.

It is not an unprimeable number, because it can be changed into a prime (51840043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40915 + ... + 42162.

Almost surely, 2^51840048 is an apocalyptic number.

It is an amenable number.

51840048 is an abundant number, since it is smaller than the sum of its proper divisors (92383360).

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

51840048 is a wasteful number, since it uses less digits than its factorization.

51840048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83101 (or 83095 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 51840048 is about 7200.0033333326. The cubic root of 51840048 is about 372.8680157971.

The spelling of 51840048 in words is "fifty-one million, eight hundred forty thousand, forty-eight".