5261161 has 4 divisors (see below), whose sum is σ = 5389524. Its totient is φ = 5132800.

The previous prime is 5261153. The next prime is 5261173. The reversal of 5261161 is 1611625.

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 913936 + 4347225 = 956^2 + 2085^2 .

It is a cyclic number.

It is not a de Polignac number, because 5261161 - 2³ = 5261153 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5261101) 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, 64120 + ... + 64201.

It is an arithmetic number, because the mean of its divisors is an integer number (1347381).

Almost surely, 2^5261161 is an apocalyptic number.

It is an amenable number.

5261161 is a deficient number, since it is larger than the sum of its proper divisors (128363).

5261161 is a wasteful number, since it uses less digits than its factorization.

5261161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128362.

The product of its digits is 360, while the sum is 22.

The square root of 5261161 is about 2293.7220842988. The cubic root of 5261161 is about 173.9244067639.

Adding to 5261161 its reverse (1611625), we get a palindrome (6872786).

The spelling of 5261161 in words is "five million, two hundred sixty-one thousand, one hundred sixty-one".