51323513 has 8 divisors (see below), whose sum is σ = 53071200. Its totient is φ = 49599520.

The previous prime is 51323501. The next prime is 51323521. The reversal of 51323513 is 31532315.

51323513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51323513 - 2⁶ = 51323449 is a prime.

It is a super-2 number, since 2×51323513² = 5268205973322338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51323543) 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 7 ways as a sum of consecutive naturals, for example, 1463 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (6633900).

Almost surely, 2^51323513 is an apocalyptic number.

It is an amenable number.

51323513 is a deficient number, since it is larger than the sum of its proper divisors (1747687).

51323513 is a wasteful number, since it uses less digits than its factorization.

51323513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11847.

The product of its digits is 1350, while the sum is 23.

The square root of 51323513 is about 7164.0430624055. The cubic root of 51323513 is about 371.6254588654.

Adding to 51323513 its reverse (31532315), we get a palindrome (82855828).

The spelling of 51323513 in words is "fifty-one million, three hundred twenty-three thousand, five hundred thirteen".