5161165049 has 4 divisors (see below), whose sum is σ = 5162062080. Its totient is φ = 5160268020.

The previous prime is 5161165027. The next prime is 5161165123. The reversal of 5161165049 is 9405611615.

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 5161165049 - 2²⁸ = 4892729593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5161165019) 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, 439829 + ... + 451410.

It is an arithmetic number, because the mean of its divisors is an integer number (1290515520).

Almost surely, 2^5161165049 is an apocalyptic number.

It is an amenable number.

5161165049 is a deficient number, since it is larger than the sum of its proper divisors (897031).

5161165049 is an equidigital number, since it uses as much as digits as its factorization.

5161165049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897030.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 5161165049 is about 71841.2489381971. The cubic root of 5161165049 is about 1728.1545635823.

The spelling of 5161165049 in words is "five billion, one hundred sixty-one million, one hundred sixty-five thousand, forty-nine".