51316293 has 16 divisors (see below), whose sum is σ = 78718976. Its totient is φ = 29127600.

The previous prime is 51316271. The next prime is 51316337. The reversal of 51316293 is 39261315.

It is not a de Polignac number, because 51316293 - 2⁶ = 51316229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51316293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51316193) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4921 + ... + 11262.

It is an arithmetic number, because the mean of its divisors is an integer number (4919936).

Almost surely, 2^51316293 is an apocalyptic number.

It is an amenable number.

51316293 is a deficient number, since it is larger than the sum of its proper divisors (27402683).

51316293 is a wasteful number, since it uses less digits than its factorization.

51316293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16344.

The product of its digits is 4860, while the sum is 30.

The square root of 51316293 is about 7163.5391392802. The cubic root of 51316293 is about 371.6080317546.

The spelling of 51316293 in words is "fifty-one million, three hundred sixteen thousand, two hundred ninety-three".