53554021111 has 4 divisors (see below), whose sum is σ = 53554759272. Its totient is φ = 53553282952.

The previous prime is 53554021069. The next prime is 53554021127. The reversal of 53554021111 is 11112045535.

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 53554021111 - 2¹¹ = 53554019063 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 53554021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53554021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246736 + ... + 409861.

It is an arithmetic number, because the mean of its divisors is an integer number (13388689818).

Almost surely, 2^53554021111 is an apocalyptic number.

53554021111 is a deficient number, since it is larger than the sum of its proper divisors (738161).

53554021111 is an equidigital number, since it uses as much as digits as its factorization.

53554021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738160.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 53554021111 its reverse (11112045535), we get a palindrome (64666066646).

The spelling of 53554021111 in words is "fifty-three billion, five hundred fifty-four million, twenty-one thousand, one hundred eleven".