26211161 has 8 divisors (see below), whose sum is σ = 28134504. Its totient is φ = 24330240.

The previous prime is 26211139. The next prime is 26211167. The reversal of 26211161 is 16111262.

It can be written as a sum of positive squares in 4 ways, for example, as 10758400 + 15452761 = 3280^2 + 3931^2 .

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 26211161 - 2¹⁸ = 25949017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26211167) 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, 9320 + ... + 11801.

It is an arithmetic number, because the mean of its divisors is an integer number (3516813).

Almost surely, 2^26211161 is an apocalyptic number.

It is an amenable number.

26211161 is a deficient number, since it is larger than the sum of its proper divisors (1923343).

26211161 is a wasteful number, since it uses less digits than its factorization.

26211161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211.

The product of its digits is 144, while the sum is 20.

The square root of 26211161 is about 5119.6836816350. The cubic root of 26211161 is about 297.0494500603.

The spelling of 26211161 in words is "twenty-six million, two hundred eleven thousand, one hundred sixty-one".