51323039 has 4 divisors (see below), whose sum is σ = 51337440. Its totient is φ = 51308640.

The previous prime is 51323029. The next prime is 51323071. The reversal of 51323039 is 93032315.

51323039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93032315 = 5 ⋅18606463.

It is a cyclic number.

It is not a de Polignac number, because 51323039 - 2⁸ = 51322783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51322999 and 51323017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51323029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2522 + ... + 10440.

It is an arithmetic number, because the mean of its divisors is an integer number (12834360).

Almost surely, 2^51323039 is an apocalyptic number.

51323039 is a deficient number, since it is larger than the sum of its proper divisors (14401).

51323039 is an equidigital number, since it uses as much as digits as its factorization.

51323039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14400.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 51323039 is about 7164.0099804509. The cubic root of 51323039 is about 371.6243148088.

The spelling of 51323039 in words is "fifty-one million, three hundred twenty-three thousand, thirty-nine".