53011111 has 4 divisors (see below), whose sum is σ = 53168752. Its totient is φ = 52853472.

The previous prime is 53011103. The next prime is 53011129. The reversal of 53011111 is 11111035.

53011111 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 is a cyclic number.

It is not a de Polignac number, because 53011111 - 2³ = 53011103 is a prime.

It is a Duffinian number.

53011111 is a modest number, since divided by 11111 gives 530 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 53011091 and 53011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53011141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78315 + ... + 78988.

It is an arithmetic number, because the mean of its divisors is an integer number (13292188).

Almost surely, 2^53011111 is an apocalyptic number.

53011111 is a deficient number, since it is larger than the sum of its proper divisors (157641).

53011111 is a wasteful number, since it uses less digits than its factorization.

53011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157640.

The product of its (nonzero) digits is 15, while the sum is 13.

The square root of 53011111 is about 7280.8729559030. The cubic root of 53011111 is about 375.6548227019.

Adding to 53011111 its reverse (11111035), we get a palindrome (64122146).

The spelling of 53011111 in words is "fifty-three million, eleven thousand, one hundred eleven".