53811155 has 4 divisors (see below), whose sum is σ = 64573392. Its totient is φ = 43048920.

The previous prime is 53811151. The next prime is 53811161. The reversal of 53811155 is 55111835.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53811155 - 2² = 53811151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53811151) 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, 5381111 + ... + 5381120.

It is an arithmetic number, because the mean of its divisors is an integer number (16143348).

Almost surely, 2^53811155 is an apocalyptic number.

53811155 is a deficient number, since it is larger than the sum of its proper divisors (10762237).

53811155 is a wasteful number, since it uses less digits than its factorization.

53811155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10762236.

The product of its digits is 3000, while the sum is 29.

The square root of 53811155 is about 7335.6087000330. The cubic root of 53811155 is about 377.5351896205.

The spelling of 53811155 in words is "fifty-three million, eight hundred eleven thousand, one hundred fifty-five".