51384363 has 4 divisors (see below), whose sum is σ = 68512488. Its totient is φ = 34256240.

The previous prime is 51384343. The next prime is 51384367. The reversal of 51384363 is 36348315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51384363 - 2⁶ = 51384299 is a prime.

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, 8564058 + ... + 8564063.

It is an arithmetic number, because the mean of its divisors is an integer number (17128122).

Almost surely, 2^51384363 is an apocalyptic number.

51384363 is a deficient number, since it is larger than the sum of its proper divisors (17128125).

51384363 is a wasteful number, since it uses less digits than its factorization.

51384363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17128124.

The product of its digits is 25920, while the sum is 33.

The square root of 51384363 is about 7168.2887079135. The cubic root of 51384363 is about 371.7722692764.

The spelling of 51384363 in words is "fifty-one million, three hundred eighty-four thousand, three hundred sixty-three".