262640251 has 2 divisors, whose sum is σ = 262640252. Its totient is φ = 262640250.

The previous prime is 262640239. The next prime is 262640263. The reversal of 262640251 is 152046262.

It is a balanced prime because it is at equal distance from previous prime (262640239) and next prime (262640263).

It is a cyclic number.

It is not a de Polignac number, because 262640251 - 2¹¹ = 262638203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (262640221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131320125 + 131320126.

It is an arithmetic number, because the mean of its divisors is an integer number (131320126).

Almost surely, 2^262640251 is an apocalyptic number.

262640251 is a deficient number, since it is larger than the sum of its proper divisors (1).

262640251 is an equidigital number, since it uses as much as digits as its factorization.

262640251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 262640251 is about 16206.1794078679. The cubic root of 262640251 is about 640.4035955295.

The spelling of 262640251 in words is "two hundred sixty-two million, six hundred forty thousand, two hundred fifty-one".