5239009161 has 27 divisors (see below), whose sum is σ = 7918331239. Its totient is φ = 3337632672.

The previous prime is 5239009133. The next prime is 5239009199. The reversal of 5239009161 is 1619009325.

The square root of 5239009161 is 72381.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4751482761 + 487526400 = 68931^2 + 22080^2 .

It is not a de Polignac number, because 5239009161 - 2⁵ = 5239009129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5239049161) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4993765 + ... + 4994813.

Almost surely, 2^5239009161 is an apocalyptic number.

5239009161 is the 72381-st square number.

5239009161 is the 36191-st centered octagonal number.

It is an amenable number.

5239009161 is a deficient number, since it is larger than the sum of its proper divisors (2679322078).

5239009161 is an equidigital number, since it uses as much as digits as its factorization.

5239009161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The cubic root of 5239009161 is about 1736.7996354427.

Multiplying 5239009161 by its sum of digits (36), we get a square (188604329796 = 434286²).

The spelling of 5239009161 in words is "five billion, two hundred thirty-nine million, nine thousand, one hundred sixty-one".