50513884357 has 4 divisors (see below), whose sum is σ = 50518381356. Its totient is φ = 50509387360.

The previous prime is 50513884313. The next prime is 50513884373. The reversal of 50513884357 is 75348831505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75348831505 = 5 ⋅15069766301.

It can be written as a sum of positive squares in 2 ways, for example, as 50104793281 + 409091076 = 223841^2 + 20226^2 .

It is a cyclic number.

It is not a de Polignac number, because 50513884357 - 2⁷ = 50513884229 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 50513884357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50513884397) 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, 2231608 + ... + 2254129.

It is an arithmetic number, because the mean of its divisors is an integer number (12629595339).

Almost surely, 2^50513884357 is an apocalyptic number.

It is an amenable number.

50513884357 is a deficient number, since it is larger than the sum of its proper divisors (4496999).

50513884357 is a wasteful number, since it uses less digits than its factorization.

50513884357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496998.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 50513884357 in words is "fifty billion, five hundred thirteen million, eight hundred eighty-four thousand, three hundred fifty-seven".