53211155 has 4 divisors (see below), whose sum is σ = 63853392. Its totient is φ = 42568920.

The previous prime is 53211131. The next prime is 53211157. The reversal of 53211155 is 55111235.

It is a happy number.

53211155 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 not a de Polignac number, because 53211155 - 2⁶ = 53211091 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 53211155.

It is not an unprimeable number, because it can be changed into a prime (53211157) 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, 5321111 + ... + 5321120.

It is an arithmetic number, because the mean of its divisors is an integer number (15963348).

Almost surely, 2^53211155 is an apocalyptic number.

53211155 is a deficient number, since it is larger than the sum of its proper divisors (10642237).

53211155 is a wasteful number, since it uses less digits than its factorization.

53211155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642236.

The product of its digits is 750, while the sum is 23.

The square root of 53211155 is about 7294.5976585416. The cubic root of 53211155 is about 376.1267562486.

The spelling of 53211155 in words is "fifty-three million, two hundred eleven thousand, one hundred fifty-five".