51317322 has 64 divisors (see below), whose sum is σ = 127298304. Its totient is φ = 13455360.

The previous prime is 51317293. The next prime is 51317341. The reversal of 51317322 is 22371315.

It is a junction number, because it is equal to n+sod(n) for n = 51317292 and 51317301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28398 + ... + 30150.

It is an arithmetic number, because the mean of its divisors is an integer number (1989036).

Almost surely, 2^51317322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51317322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63649152).

51317322 is an abundant number, since it is smaller than the sum of its proper divisors (75980982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51317322 is a wasteful number, since it uses less digits than its factorization.

51317322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 1260, while the sum is 24.

The square root of 51317322 is about 7163.6109609610. The cubic root of 51317322 is about 371.6105155798.

Adding to 51317322 its reverse (22371315), we get a palindrome (73688637).

The spelling of 51317322 in words is "fifty-one million, three hundred seventeen thousand, three hundred twenty-two".