51028452317 has 4 divisors (see below), whose sum is σ = 52674531456. Its totient is φ = 49382373180.

The previous prime is 51028452313. The next prime is 51028452341. The reversal of 51028452317 is 71325482015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51028452317 - 2² = 51028452313 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 (51028452313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823039523 + ... + 823039584.

It is an arithmetic number, because the mean of its divisors is an integer number (13168632864).

Almost surely, 2^51028452317 is an apocalyptic number.

It is an amenable number.

51028452317 is a deficient number, since it is larger than the sum of its proper divisors (1646079139).

51028452317 is a wasteful number, since it uses less digits than its factorization.

51028452317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646079138.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 51028452317 in words is "fifty-one billion, twenty-eight million, four hundred fifty-two thousand, three hundred seventeen".