268452161 has 4 divisors (see below), whose sum is σ = 269050500. Its totient is φ = 267853824.

The previous prime is 268452137. The next prime is 268452187. The reversal of 268452161 is 161254862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130530625 + 137921536 = 11425^2 + 11744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268452161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (268452061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298496 + ... + 299393.

It is an arithmetic number, because the mean of its divisors is an integer number (67262625).

Almost surely, 2^268452161 is an apocalyptic number.

It is an amenable number.

268452161 is a deficient number, since it is larger than the sum of its proper divisors (598339).

268452161 is an equidigital number, since it uses as much as digits as its factorization.

268452161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598338.

The product of its digits is 23040, while the sum is 35.

The square root of 268452161 is about 16384.5097882115. The cubic root of 268452161 is about 645.0929585788.

It can be divided in two parts, 2684 and 52161, that added together give a palindrome (54845).

The spelling of 268452161 in words is "two hundred sixty-eight million, four hundred fifty-two thousand, one hundred sixty-one".