26211971 has 4 divisors (see below), whose sum is σ = 26265000. Its totient is φ = 26158944.

The previous prime is 26211953. The next prime is 26212003. The reversal of 26211971 is 17911262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26211971 - 2⁶ = 26211907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26211901) 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, 25766 + ... + 26763.

It is an arithmetic number, because the mean of its divisors is an integer number (6566250).

Almost surely, 2^26211971 is an apocalyptic number.

26211971 is a deficient number, since it is larger than the sum of its proper divisors (53029).

26211971 is an equidigital number, since it uses as much as digits as its factorization.

26211971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53028.

The product of its digits is 1512, while the sum is 29.

The square root of 26211971 is about 5119.7627874737. The cubic root of 26211971 is about 297.0525099219.

The spelling of 26211971 in words is "twenty-six million, two hundred eleven thousand, nine hundred seventy-one".