268551247 has 2 divisors, whose sum is σ = 268551248. Its totient is φ = 268551246.

The previous prime is 268551229. The next prime is 268551253. The reversal of 268551247 is 742155862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268551247 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 (268551287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134275623 + 134275624.

It is an arithmetic number, because the mean of its divisors is an integer number (134275624).

Almost surely, 2^268551247 is an apocalyptic number.

268551247 is a deficient number, since it is larger than the sum of its proper divisors (1).

268551247 is an equidigital number, since it uses as much as digits as its factorization.

268551247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 268551247 is about 16387.5332799052. The cubic root of 268551247 is about 645.1723169991.

The spelling of 268551247 in words is "two hundred sixty-eight million, five hundred fifty-one thousand, two hundred forty-seven".