51273920 has 28 divisors (see below), whose sum is σ = 122096784. Its totient is φ = 20509440.

The previous prime is 51273919. The next prime is 51273941. The reversal of 51273920 is 2937215.

It is a zygodrome in base 2.

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, 79796 + ... + 80435.

Almost surely, 2^51273920 is an apocalyptic number.

It is an amenable number.

51273920 is an abundant number, since it is smaller than the sum of its proper divisors (70822864).

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

51273920 is a wasteful number, since it uses less digits than its factorization.

51273920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160248 (or 160238 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 51273920 is about 7160.5809820154. The cubic root of 51273920 is about 371.5057219281.

The spelling of 51273920 in words is "fifty-one million, two hundred seventy-three thousand, nine hundred twenty".