51384368 has 20 divisors (see below), whose sum is σ = 113779920. Its totient is φ = 22021824.

The previous prime is 51384367. The next prime is 51384409. The reversal of 51384368 is 86348315.

It is not an unprimeable number, because it can be changed into a prime (51384367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229283 + ... + 229506.

It is an arithmetic number, because the mean of its divisors is an integer number (5688996).

Almost surely, 2^51384368 is an apocalyptic number.

It is an amenable number.

51384368 is an abundant number, since it is smaller than the sum of its proper divisors (62395552).

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

51384368 is a wasteful number, since it uses less digits than its factorization.

51384368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458804 (or 458798 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 51384368 is about 7168.2890566718. The cubic root of 51384368 is about 371.7722813349.

The spelling of 51384368 in words is "fifty-one million, three hundred eighty-four thousand, three hundred sixty-eight".