51317736 has 16 divisors (see below), whose sum is σ = 128294400. Its totient is φ = 17105904.

The previous prime is 51317729. The next prime is 51317743. The reversal of 51317736 is 63771315.

51317736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51317729) and next prime (51317743).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51317697 and 51317706.

It is an unprimeable number.

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, 1069096 + ... + 1069143.

It is an arithmetic number, because the mean of its divisors is an integer number (8018400).

Almost surely, 2^51317736 is an apocalyptic number.

It is an amenable number.

51317736 is an abundant number, since it is smaller than the sum of its proper divisors (76976664).

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

51317736 is a wasteful number, since it uses less digits than its factorization.

51317736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138248 (or 2138244 counting only the distinct ones).

The product of its digits is 13230, while the sum is 33.

The square root of 51317736 is about 7163.6398569442. The cubic root of 51317736 is about 371.6115148937.

The spelling of 51317736 in words is "fifty-one million, three hundred seventeen thousand, seven hundred thirty-six".