262808261 has 2 divisors, whose sum is σ = 262808262. Its totient is φ = 262808260.

The previous prime is 262808257. The next prime is 262808317. The reversal of 262808261 is 162808262.

262808261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238857025 + 23951236 = 15455^2 + 4894^2 .

It is a cyclic number.

It is not a de Polignac number, because 262808261 - 2² = 262808257 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262808201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131404130 + 131404131.

It is an arithmetic number, because the mean of its divisors is an integer number (131404131).

Almost surely, 2^262808261 is an apocalyptic number.

It is an amenable number.

262808261 is a deficient number, since it is larger than the sum of its proper divisors (1).

262808261 is an equidigital number, since it uses as much as digits as its factorization.

262808261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 262808261 is about 16211.3620957648. The cubic root of 262808261 is about 640.5401210282.

Subtracting from 262808261 its reverse (162808262), we obtain a palindrome (99999999).

The spelling of 262808261 in words is "two hundred sixty-two million, eight hundred eight thousand, two hundred sixty-one".