266332541 has 2 divisors, whose sum is σ = 266332542. Its totient is φ = 266332540.

The previous prime is 266332513. The next prime is 266332553. The reversal of 266332541 is 145233662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206037316 + 60295225 = 14354^2 + 7765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266332541 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266332498 and 266332507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266332511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133166270 + 133166271.

It is an arithmetic number, because the mean of its divisors is an integer number (133166271).

Almost surely, 2^266332541 is an apocalyptic number.

It is an amenable number.

266332541 is a deficient number, since it is larger than the sum of its proper divisors (1).

266332541 is an equidigital number, since it uses as much as digits as its factorization.

266332541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 266332541 is about 16319.6979445087. The cubic root of 266332541 is about 643.3906483936.

The spelling of 266332541 in words is "two hundred sixty-six million, three hundred thirty-two thousand, five hundred forty-one".