53521450111 has 4 divisors (see below), whose sum is σ = 54275273424. Its totient is φ = 52767626800.

The previous prime is 53521450069. The next prime is 53521450127. The reversal of 53521450111 is 11105412535.

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 53521450111 - 2³¹ = 51373966463 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 53521450111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53521450811) 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, 376911550 + ... + 376911691.

It is an arithmetic number, because the mean of its divisors is an integer number (13568818356).

Almost surely, 2^53521450111 is an apocalyptic number.

53521450111 is a deficient number, since it is larger than the sum of its proper divisors (753823313).

53521450111 is an equidigital number, since it uses as much as digits as its factorization.

53521450111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753823312.

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

Adding to 53521450111 its reverse (11105412535), we get a palindrome (64626862646).

The spelling of 53521450111 in words is "fifty-three billion, five hundred twenty-one million, four hundred fifty thousand, one hundred eleven".