5139505205 has 4 divisors (see below), whose sum is σ = 6167406252. Its totient is φ = 4111604160.

The previous prime is 5139505201. The next prime is 5139505219. The reversal of 5139505205 is 5025059315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1346669809 + 3792835396 = 36697^2 + 61586^2 .

It is not a de Polignac number, because 5139505205 - 2² = 5139505201 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 (5139505201) 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, 513950516 + ... + 513950525.

It is an arithmetic number, because the mean of its divisors is an integer number (1541851563).

Almost surely, 2^5139505205 is an apocalyptic number.

It is an amenable number.

5139505205 is a deficient number, since it is larger than the sum of its proper divisors (1027901047).

5139505205 is a wasteful number, since it uses less digits than its factorization.

5139505205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027901046.

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 5139505205 is about 71690.3424806996. The cubic root of 5139505205 is about 1725.7336603372.

The spelling of 5139505205 in words is "five billion, one hundred thirty-nine million, five hundred five thousand, two hundred five".