268289551 has 8 divisors (see below), whose sum is σ = 273726864. Its totient is φ = 262866240.

The previous prime is 268289543. The next prime is 268289561. The reversal of 268289551 is 155982862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268289551 - 2³ = 268289543 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 (268289561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40771 + ... + 46891.

It is an arithmetic number, because the mean of its divisors is an integer number (34215858).

Almost surely, 2^268289551 is an apocalyptic number.

268289551 is a deficient number, since it is larger than the sum of its proper divisors (5437313).

268289551 is an equidigital number, since it uses as much as digits as its factorization.

268289551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001.

The product of its digits is 345600, while the sum is 46.

The square root of 268289551 is about 16379.5467275502. The cubic root of 268289551 is about 644.9626811732.

The spelling of 268289551 in words is "two hundred sixty-eight million, two hundred eighty-nine thousand, five hundred fifty-one".