51840448 has 28 divisors (see below), whose sum is σ = 112224312. Its totient is φ = 23563520.

The previous prime is 51840433. The next prime is 51840461. The reversal of 51840448 is 84404815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36115 + ... + 37522.

Almost surely, 2^51840448 is an apocalyptic number.

It is an amenable number.

51840448 is an abundant number, since it is smaller than the sum of its proper divisors (60383864).

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

51840448 is a wasteful number, since it uses less digits than its factorization.

51840448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73660 (or 73650 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 51840448 is about 7200.0311110439. The cubic root of 51840448 is about 372.8689748164.

The spelling of 51840448 in words is "fifty-one million, eight hundred forty thousand, four hundred forty-eight".