53524543100221 has 4 divisors (see below), whose sum is σ = 54830019761244. Its totient is φ = 52219066439200.

The previous prime is 53524543100207. The next prime is 53524543100227. The reversal of 53524543100221 is 12200134542535.

It is a happy number.

53524543100221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1383001872121 + 52141541228100 = 1176011^2 + 7220910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53524543100221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53524543100227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652738330450 + ... + 652738330531.

It is an arithmetic number, because the mean of its divisors is an integer number (13707504940311).

Almost surely, 2^{53524543100221} is an apocalyptic number.

It is an amenable number.

53524543100221 is a deficient number, since it is larger than the sum of its proper divisors (1305476661023).

53524543100221 is a wasteful number, since it uses less digits than its factorization.

53524543100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305476661022.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 53524543100221 its reverse (12200134542535), we get a palindrome (65724677642756).

The spelling of 53524543100221 in words is "fifty-three trillion, five hundred twenty-four billion, five hundred forty-three million, one hundred thousand, two hundred twenty-one".