262251261 has 24 divisors (see below), whose sum is σ = 392325336. Its totient is φ = 168704640.

The previous prime is 262251251. The next prime is 262251271. The reversal of 262251261 is 162152262.

It is an interprime number because it is at equal distance from previous prime (262251251) and next prime (262251271).

It can be written as a sum of positive squares in 4 ways, for example, as 8964036 + 253287225 = 2994^2 + 15915^2 .

It is not a de Polignac number, because 262251261 - 2⁵ = 262251229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (262251251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24591 + ... + 33603.

It is an arithmetic number, because the mean of its divisors is an integer number (16346889).

Almost surely, 2^262251261 is an apocalyptic number.

It is an amenable number.

262251261 is a deficient number, since it is larger than the sum of its proper divisors (130074075).

262251261 is a wasteful number, since it uses less digits than its factorization.

262251261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133 (or 9130 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 262251261 is about 16194.1736745040. The cubic root of 262251261 is about 640.0872773226.

The spelling of 262251261 in words is "two hundred sixty-two million, two hundred fifty-one thousand, two hundred sixty-one".