5166261 has 10 divisors (see below), whose sum is σ = 7717622. Its totient is φ = 3444120.

The previous prime is 5166257. The next prime is 5166289. The reversal of 5166261 is 1626615.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4435236 + 731025 = 2106^2 + 855^2 .

It is not a de Polignac number, because 5166261 - 2² = 5166257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31810 + ... + 31971.

Almost surely, 2^5166261 is an apocalyptic number.

It is an amenable number.

5166261 is a deficient number, since it is larger than the sum of its proper divisors (2551361).

5166261 is an equidigital number, since it uses as much as digits as its factorization.

5166261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63793 (or 63784 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 5166261 is about 2272.9410463098. The cubic root of 5166261 is about 172.8723149295.

The spelling of 5166261 in words is "five million, one hundred sixty-six thousand, two hundred sixty-one".