51384958 has 4 divisors (see below), whose sum is σ = 77077440. Its totient is φ = 25692478.

The previous prime is 51384947. The next prime is 51384961. The reversal of 51384958 is 85948315.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12846238 + ... + 12846241.

It is an arithmetic number, because the mean of its divisors is an integer number (19269360).

Almost surely, 2^51384958 is an apocalyptic number.

51384958 is a deficient number, since it is larger than the sum of its proper divisors (25692482).

51384958 is a wasteful number, since it uses less digits than its factorization.

51384958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25692481.

The product of its digits is 172800, while the sum is 43.

The square root of 51384958 is about 7168.3302100280. The cubic root of 51384958 is about 371.7737042372.

The spelling of 51384958 in words is "fifty-one million, three hundred eighty-four thousand, nine hundred fifty-eight".