51867384 has 16 divisors (see below), whose sum is σ = 129668520. Its totient is φ = 17289120.

The previous prime is 51867383. The next prime is 51867407. The reversal of 51867384 is 48376815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51867383) 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, 1080547 + ... + 1080594.

Almost surely, 2^51867384 is an apocalyptic number.

It is an amenable number.

51867384 is an abundant number, since it is smaller than the sum of its proper divisors (77801136).

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

51867384 is a wasteful number, since it uses less digits than its factorization.

51867384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161150 (or 2161146 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 51867384 is about 7201.9014155985. The cubic root of 51867384 is about 372.9335438294.

The spelling of 51867384 in words is "fifty-one million, eight hundred sixty-seven thousand, three hundred eighty-four".