51838960 has 20 divisors (see below), whose sum is σ = 120525768. Its totient is φ = 20735552.

The previous prime is 51838949. The next prime is 51838981. The reversal of 51838960 is 6983815.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323914 + ... + 324073.

Almost surely, 2^51838960 is an apocalyptic number.

It is an amenable number.

51838960 is an abundant number, since it is smaller than the sum of its proper divisors (68686808).

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

51838960 is a wasteful number, since it uses less digits than its factorization.

51838960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648000 (or 647994 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 51838960 is about 7199.9277774155. The cubic root of 51838960 is about 372.8654072396.

The spelling of 51838960 in words is "fifty-one million, eight hundred thirty-eight thousand, nine hundred sixty".