266117541 has 8 divisors (see below), whose sum is σ = 375695424. Its totient is φ = 166975680.

The previous prime is 266117531. The next prime is 266117557. The reversal of 266117541 is 145711662.

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

It is not a de Polignac number, because 266117541 - 2¹⁹ = 265593253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266117531) 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, 2608945 + ... + 2609046.

It is an arithmetic number, because the mean of its divisors is an integer number (46961928).

Almost surely, 2^266117541 is an apocalyptic number.

It is an amenable number.

266117541 is a deficient number, since it is larger than the sum of its proper divisors (109577883).

266117541 is a wasteful number, since it uses less digits than its factorization.

266117541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218011.

The product of its digits is 10080, while the sum is 33.

The square root of 266117541 is about 16313.1094828668. The cubic root of 266117541 is about 643.2174736248.

It can be divided in two parts, 2661 and 17541, that added together give a palindrome (20202).

The spelling of 266117541 in words is "two hundred sixty-six million, one hundred seventeen thousand, five hundred forty-one".