51512323 has 16 divisors (see below), whose sum is σ = 55202400. Its totient is φ = 47980800.

The previous prime is 51512299. The next prime is 51512333. The reversal of 51512323 is 32321515.

It is a cyclic number.

It is not a de Polignac number, because 51512323 - 2¹⁷ = 51381251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51512294 and 51512303.

It is not an unprimeable number, because it can be changed into a prime (51512333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125743 + ... + 126151.

It is an arithmetic number, because the mean of its divisors is an integer number (3450150).

Almost surely, 2^51512323 is an apocalyptic number.

51512323 is a deficient number, since it is larger than the sum of its proper divisors (3690077).

51512323 is a wasteful number, since it uses less digits than its factorization.

51512323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 900, while the sum is 22.

The square root of 51512323 is about 7177.2085799425. The cubic root of 51512323 is about 372.0806156461.

Adding to 51512323 its reverse (32321515), we get a palindrome (83833838).

The spelling of 51512323 in words is "fifty-one million, five hundred twelve thousand, three hundred twenty-three".