51840924 has 24 divisors (see below), whose sum is σ = 121085328. Its totient is φ = 17262720.

The previous prime is 51840923. The next prime is 51840961. The reversal of 51840924 is 42904815.

51840924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51840923) 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 7 ways as a sum of consecutive naturals, for example, 16314 + ... + 19230.

It is an arithmetic number, because the mean of its divisors is an integer number (5045222).

Almost surely, 2^51840924 is an apocalyptic number.

It is an amenable number.

51840924 is an abundant number, since it is smaller than the sum of its proper divisors (69244404).

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

51840924 is a wasteful number, since it uses less digits than its factorization.

51840924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405 (or 4403 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 51840924 is about 7200.0641663807. The cubic root of 51840924 is about 372.8701160430.

The spelling of 51840924 in words is "fifty-one million, eight hundred forty thousand, nine hundred twenty-four".