53503521111 has 8 divisors (see below), whose sum is σ = 79264475760. Its totient is φ = 35669014056.

The previous prime is 53503521103. The next prime is 53503521161. The reversal of 53503521111 is 11112530535.

It is not a de Polignac number, because 53503521111 - 2³ = 53503521103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1981611893 = 53503521111 / (5 + 3 + 5 + 0 + 3 + 5 + 2 + 1 + 1 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53503521161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990805920 + ... + 990805973.

It is an arithmetic number, because the mean of its divisors is an integer number (9908059470).

Almost surely, 2^53503521111 is an apocalyptic number.

53503521111 is a deficient number, since it is larger than the sum of its proper divisors (25760954649).

53503521111 is a wasteful number, since it uses less digits than its factorization.

53503521111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981611902 (or 1981611896 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The spelling of 53503521111 in words is "fifty-three billion, five hundred three million, five hundred twenty-one thousand, one hundred eleven".