51519317 has 8 divisors (see below), whose sum is σ = 54298560. Its totient is φ = 48746880.

The previous prime is 51519311. The next prime is 51519337. The reversal of 51519317 is 71391515.

It is a happy number.

51519317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51519317 - 2¹² = 51515221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51519311) 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 7 ways as a sum of consecutive naturals, for example, 23717 + ... + 25797.

It is an arithmetic number, because the mean of its divisors is an integer number (6787320).

Almost surely, 2^51519317 is an apocalyptic number.

It is an amenable number.

51519317 is a deficient number, since it is larger than the sum of its proper divisors (2779243).

51519317 is a wasteful number, since it uses less digits than its factorization.

51519317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403.

The product of its digits is 4725, while the sum is 32.

The square root of 51519317 is about 7177.6958001855. The cubic root of 51519317 is about 372.0974544264.

The spelling of 51519317 in words is "fifty-one million, five hundred nineteen thousand, three hundred seventeen".