51837920 has 24 divisors (see below), whose sum is σ = 122467464. Its totient is φ = 20735104.

The previous prime is 51837917. The next prime is 51837941. The reversal of 51837920 is 2973815.

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, 161834 + ... + 162153.

It is an arithmetic number, because the mean of its divisors is an integer number (5102811).

Almost surely, 2^51837920 is an apocalyptic number.

It is an amenable number.

51837920 is an abundant number, since it is smaller than the sum of its proper divisors (70629544).

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

51837920 is a wasteful number, since it uses less digits than its factorization.

51837920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324002 (or 323994 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 51837920 is about 7199.8555541066. The cubic root of 51837920 is about 372.8629137314.

The spelling of 51837920 in words is "fifty-one million, eight hundred thirty-seven thousand, nine hundred twenty".