51523503193 has 2 divisors, whose sum is σ = 51523503194. Its totient is φ = 51523503192.

The previous prime is 51523503191. The next prime is 51523503211. The reversal of 51523503193 is 39130532515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41368305664 + 10155197529 = 203392^2 + 100773^2 .

It is a cyclic number.

It is not a de Polignac number, because 51523503193 - 2¹ = 51523503191 is a prime.

It is a super-3 number, since 3×51523503193³ (a number of 33 digits) contains 333 as substring.

Together with 51523503191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51523503191) 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 as a sum of consecutive naturals, namely, 25761751596 + 25761751597.

It is an arithmetic number, because the mean of its divisors is an integer number (25761751597).

Almost surely, 2^51523503193 is an apocalyptic number.

It is an amenable number.

51523503193 is a deficient number, since it is larger than the sum of its proper divisors (1).

51523503193 is an equidigital number, since it uses as much as digits as its factorization.

51523503193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60750, while the sum is 37.

The spelling of 51523503193 in words is "fifty-one billion, five hundred twenty-three million, five hundred three thousand, one hundred ninety-three".