51317059 has 4 divisors (see below), whose sum is σ = 52972480. Its totient is φ = 49661640.

The previous prime is 51317051. The next prime is 51317069. The reversal of 51317059 is 95071315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51317059 - 2³ = 51317051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1655389 = 51317059 / (5 + 1 + 3 + 1 + 7 + 0 + 5 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51317059.

It is not an unprimeable number, because it can be changed into a prime (51317051) 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 3 ways as a sum of consecutive naturals, for example, 827664 + ... + 827725.

It is an arithmetic number, because the mean of its divisors is an integer number (13243120).

Almost surely, 2^51317059 is an apocalyptic number.

51317059 is a deficient number, since it is larger than the sum of its proper divisors (1655421).

51317059 is a wasteful number, since it uses less digits than its factorization.

51317059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655420.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 51317059 is about 7163.5926042734. The cubic root of 51317059 is about 371.6098807472.

The spelling of 51317059 in words is "fifty-one million, three hundred seventeen thousand, fifty-nine".