53139377 has 4 divisors (see below), whose sum is σ = 53175360. Its totient is φ = 53103396.

The previous prime is 53139367. The next prime is 53139379. The reversal of 53139377 is 77393135.

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 53139377 - 2¹² = 53135281 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 53139377.

It is not an unprimeable number, because it can be changed into a prime (53139379) 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, 15677 + ... + 18762.

It is an arithmetic number, because the mean of its divisors is an integer number (13293840).

Almost surely, 2^53139377 is an apocalyptic number.

It is an amenable number.

53139377 is a deficient number, since it is larger than the sum of its proper divisors (35983).

53139377 is a wasteful number, since it uses less digits than its factorization.

53139377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35982.

The product of its digits is 59535, while the sum is 38.

The square root of 53139377 is about 7289.6760559026. The cubic root of 53139377 is about 375.9575575490.

The spelling of 53139377 in words is "fifty-three million, one hundred thirty-nine thousand, three hundred seventy-seven".