51338983 has 4 divisors (see below), whose sum is σ = 51407560. Its totient is φ = 51270408.

The previous prime is 51338977. The next prime is 51338999. The reversal of 51338983 is 38983315.

It is a happy number.

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 51338983 - 2⁹ = 51338471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51338953) by changing a digit.

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, 33153 + ... + 34666.

It is an arithmetic number, because the mean of its divisors is an integer number (12851890).

Almost surely, 2^51338983 is an apocalyptic number.

51338983 is a deficient number, since it is larger than the sum of its proper divisors (68577).

51338983 is an equidigital number, since it uses as much as digits as its factorization.

51338983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68576.

The product of its digits is 77760, while the sum is 40.

The square root of 51338983 is about 7165.1226786427. The cubic root of 51338983 is about 371.6627937241.

The spelling of 51338983 in words is "fifty-one million, three hundred thirty-eight thousand, nine hundred eighty-three".