51322513 has 12 divisors (see below), whose sum is σ = 56589904. Its totient is φ = 46510200.

The previous prime is 51322501. The next prime is 51322519. The reversal of 51322513 is 31522315.

51322513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51322513 - 2¹³ = 51314321 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51322519) 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 11 ways as a sum of consecutive naturals, for example, 62878 + ... + 63688.

Almost surely, 2^51322513 is an apocalyptic number.

It is an amenable number.

51322513 is a deficient number, since it is larger than the sum of its proper divisors (5267391).

51322513 is a wasteful number, since it uses less digits than its factorization.

51322513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356 (or 1345 counting only the distinct ones).

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

The square root of 51322513 is about 7163.9732690735. The cubic root of 51322513 is about 371.6230452356.

Adding to 51322513 its reverse (31522315), we get a palindrome (82844828).

The spelling of 51322513 in words is "fifty-one million, three hundred twenty-two thousand, five hundred thirteen".