5161161 has 8 divisors (see below), whose sum is σ = 7041760. Its totient is φ = 3360672.

The previous prime is 5161139. The next prime is 5161181. The reversal of 5161161 is 1611615.

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

It is not a de Polignac number, because 5161161 - 2⁵ = 5161129 is a prime.

It is an Ulam number.

It is a Duffinian number.

5161161 is a modest number, since divided by 1161 gives 516 as remainder.

It is not an unprimeable number, because it can be changed into a prime (5161111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19876 + ... + 20133.

It is an arithmetic number, because the mean of its divisors is an integer number (880220).

Almost surely, 2^5161161 is an apocalyptic number.

It is an amenable number.

5161161 is a deficient number, since it is larger than the sum of its proper divisors (1880599).

5161161 is a wasteful number, since it uses less digits than its factorization.

5161161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40055.

The product of its digits is 180, while the sum is 21.

The square root of 5161161 is about 2271.8188748226. The cubic root of 5161161 is about 172.8154111662.

Adding to 5161161 its reverse (1611615), we get a palindrome (6772776).

It can be divided in two parts, 516 and 1161, that multiplied together give a square (599076 = 774²).

The spelling of 5161161 in words is "five million, one hundred sixty-one thousand, one hundred sixty-one".