262291261 has 4 divisors (see below), whose sum is σ = 269380252. Its totient is φ = 255202272.

The previous prime is 262291259. The next prime is 262291273. The reversal of 262291261 is 162192262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162192262 = 2 ⋅81096131.

It can be written as a sum of positive squares in 2 ways, for example, as 115154361 + 147136900 = 10731^2 + 12130^2 .

It is a cyclic number.

It is not a de Polignac number, because 262291261 - 2¹ = 262291259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (262291231) 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, 3544440 + ... + 3544513.

It is an arithmetic number, because the mean of its divisors is an integer number (67345063).

Almost surely, 2^262291261 is an apocalyptic number.

It is an amenable number.

262291261 is a deficient number, since it is larger than the sum of its proper divisors (7088991).

262291261 is an equidigital number, since it uses as much as digits as its factorization.

262291261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7088990.

The product of its digits is 5184, while the sum is 31.

The square root of 262291261 is about 16195.4086394879. The cubic root of 262291261 is about 640.1198188751.

The spelling of 262291261 in words is "two hundred sixty-two million, two hundred ninety-one thousand, two hundred sixty-one".