53231139 has 12 divisors (see below), whose sum is σ = 82804176. Its totient is φ = 32757552.

The previous prime is 53231117. The next prime is 53231147. The reversal of 53231139 is 93113235.

It is a happy number.

53231139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53231139 - 2²⁰ = 52182563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53231159) 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 11 ways as a sum of consecutive naturals, for example, 227367 + ... + 227600.

It is an arithmetic number, because the mean of its divisors is an integer number (6900348).

Almost surely, 2^53231139 is an apocalyptic number.

53231139 is a deficient number, since it is larger than the sum of its proper divisors (29573037).

53231139 is a wasteful number, since it uses less digits than its factorization.

53231139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454986 (or 454983 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 53231139 is about 7295.9673107820. The cubic root of 53231139 is about 376.1738364541.

The spelling of 53231139 in words is "fifty-three million, two hundred thirty-one thousand, one hundred thirty-nine".