53111081 has 4 divisors (see below), whose sum is σ = 54241152. Its totient is φ = 51981012.

The previous prime is 53111027. The next prime is 53111143. The reversal of 53111081 is 18011135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53111081 - 2¹⁴ = 53094697 is a prime.

It is a super-3 number, since 3×53111081³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53111581) 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, 564965 + ... + 565058.

It is an arithmetic number, because the mean of its divisors is an integer number (13560288).

Almost surely, 2^53111081 is an apocalyptic number.

It is an amenable number.

53111081 is a deficient number, since it is larger than the sum of its proper divisors (1130071).

53111081 is a wasteful number, since it uses less digits than its factorization.

53111081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130070.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 53111081 is about 7287.7349704829. The cubic root of 53111081 is about 375.8908149285.

The spelling of 53111081 in words is "fifty-three million, one hundred eleven thousand, eighty-one".