268557151 has 2 divisors, whose sum is σ = 268557152. Its totient is φ = 268557150.

The previous prime is 268557083. The next prime is 268557167. The reversal of 268557151 is 151755862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268557151 - 2²³ = 260168543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268557251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134278575 + 134278576.

It is an arithmetic number, because the mean of its divisors is an integer number (134278576).

Almost surely, 2^268557151 is an apocalyptic number.

268557151 is the 10365-th centered pentagonal number.

268557151 is a deficient number, since it is larger than the sum of its proper divisors (1).

268557151 is an equidigital number, since it uses as much as digits as its factorization.

268557151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 40.

The square root of 268557151 is about 16387.7134158491. The cubic root of 268557151 is about 645.1770449228.

The spelling of 268557151 in words is "two hundred sixty-eight million, five hundred fifty-seven thousand, one hundred fifty-one".