50553533521 has 2 divisors, whose sum is σ = 50553533522. Its totient is φ = 50553533520.

The previous prime is 50553533483. The next prime is 50553533587. The reversal of 50553533521 is 12533535505.

50553533521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42450833296 + 8102700225 = 206036^2 + 90015^2 .

It is a cyclic number.

It is not a de Polignac number, because 50553533521 - 2¹¹ = 50553531473 is a prime.

It is not a weakly prime, because it can be changed into another prime (50553533321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25276766760 + 25276766761.

It is an arithmetic number, because the mean of its divisors is an integer number (25276766761).

Almost surely, 2^50553533521 is an apocalyptic number.

It is an amenable number.

50553533521 is a deficient number, since it is larger than the sum of its proper divisors (1).

50553533521 is an equidigital number, since it uses as much as digits as its factorization.

50553533521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168750, while the sum is 37.

The spelling of 50553533521 in words is "fifty billion, five hundred fifty-three million, five hundred thirty-three thousand, five hundred twenty-one".