26771161 has 8 divisors (see below), whose sum is σ = 27144648. Its totient is φ = 26400000.

The previous prime is 26771159. The next prime is 26771179. The reversal of 26771161 is 16117762.

26771161 = 31² + 32² + ... + 431².

It can be written as a sum of positive squares in 4 ways, for example, as 22992025 + 3779136 = 4795^2 + 1944^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26771161 - 2¹ = 26771159 is a prime.

It is a super-2 number, since 2×26771161² = 1433390122575842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26771561) 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, 40171 + ... + 40831.

It is an arithmetic number, because the mean of its divisors is an integer number (3393081).

Almost surely, 2^26771161 is an apocalyptic number.

It is an amenable number.

26771161 is a deficient number, since it is larger than the sum of its proper divisors (373487).

26771161 is a wasteful number, since it uses less digits than its factorization.

26771161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its digits is 3528, while the sum is 31.

The square root of 26771161 is about 5174.0855230659. The cubic root of 26771161 is about 299.1500423289.

The spelling of 26771161 in words is "twenty-six million, seven hundred seventy-one thousand, one hundred sixty-one".