53118811 has 4 divisors (see below), whose sum is σ = 53394232. Its totient is φ = 52843392.

The previous prime is 53118781. The next prime is 53118839. The reversal of 53118811 is 11881135.

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 53118811 - 2⁷ = 53118683 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 53118811.

It is not an unprimeable number, because it can be changed into a prime (53118511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137421 + ... + 137806.

It is an arithmetic number, because the mean of its divisors is an integer number (13348558).

Almost surely, 2^53118811 is an apocalyptic number.

53118811 is a deficient number, since it is larger than the sum of its proper divisors (275421).

53118811 is a wasteful number, since it uses less digits than its factorization.

53118811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275420.

The product of its digits is 960, while the sum is 28.

The square root of 53118811 is about 7288.2652942933. The cubic root of 53118811 is about 375.9090502634.

Adding to 53118811 its reverse (11881135), we get a palindrome (64999946).

The spelling of 53118811 in words is "fifty-three million, one hundred eighteen thousand, eight hundred eleven".