50520531511 has 4 divisors (see below), whose sum is σ = 50552938800. Its totient is φ = 50488124224.

The previous prime is 50520531449. The next prime is 50520531533. The reversal of 50520531511 is 11513502505.

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 50520531511 - 2⁹ = 50520530999 is a prime.

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 50520531511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50520531571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16201306 + ... + 16204423.

It is an arithmetic number, because the mean of its divisors is an integer number (12638234700).

Almost surely, 2^50520531511 is an apocalyptic number.

50520531511 is a deficient number, since it is larger than the sum of its proper divisors (32407289).

50520531511 is a wasteful number, since it uses less digits than its factorization.

50520531511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32407288.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 50520531511 in words is "fifty billion, five hundred twenty million, five hundred thirty-one thousand, five hundred eleven".