53139479 has 8 divisors (see below), whose sum is σ = 54140880. Its totient is φ = 52142400.

The previous prime is 53139439. The next prime is 53139481. The reversal of 53139479 is 97493135.

53139479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53139479 - 2²⁰ = 52090903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53139439) 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 7 ways as a sum of consecutive naturals, for example, 33944 + ... + 35474.

It is an arithmetic number, because the mean of its divisors is an integer number (6767610).

Almost surely, 2^53139479 is an apocalyptic number.

53139479 is a deficient number, since it is larger than the sum of its proper divisors (1001401).

53139479 is a wasteful number, since it uses less digits than its factorization.

53139479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161.

The product of its digits is 102060, while the sum is 41.

The square root of 53139479 is about 7289.6830520949. The cubic root of 53139479 is about 375.9577980966.

The spelling of 53139479 in words is "fifty-three million, one hundred thirty-nine thousand, four hundred seventy-nine".