26217161 has 4 divisors (see below), whose sum is σ = 26417424. Its totient is φ = 26016900.

The previous prime is 26217151. The next prime is 26217209. The reversal of 26217161 is 16171262.

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 26217161 - 2⁶ = 26217097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26217161.

It is not an unprimeable number, because it can be changed into a prime (26217101) 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, 99935 + ... + 100196.

It is an arithmetic number, because the mean of its divisors is an integer number (6604356).

Almost surely, 2^26217161 is an apocalyptic number.

It is an amenable number.

26217161 is a deficient number, since it is larger than the sum of its proper divisors (200263).

26217161 is a wasteful number, since it uses less digits than its factorization.

26217161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200262.

The product of its digits is 1008, while the sum is 26.

The square root of 26217161 is about 5120.2696218070. The cubic root of 26217161 is about 297.0721142061.

Multiplying 26217161 by its sum of digits (26), we get a palindrome (681646186).

The spelling of 26217161 in words is "twenty-six million, two hundred seventeen thousand, one hundred sixty-one".