281422081 has 8 divisors (see below), whose sum is σ = 285986024. Its totient is φ = 276877440.

The previous prime is 281422067. The next prime is 281422109. The reversal of 281422081 is 180224182.

It can be written as a sum of positive squares in 4 ways, for example, as 5363856 + 276058225 = 2316^2 + 16615^2 .

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 281422081 - 2¹⁵ = 281389313 is a prime.

It is a super-2 number, since 2×281422081² = 158396775348741122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281422021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26155 + ... + 35311.

It is an arithmetic number, because the mean of its divisors is an integer number (35748253).

Almost surely, 2^281422081 is an apocalyptic number.

It is an amenable number.

281422081 is a deficient number, since it is larger than the sum of its proper divisors (4563943).

281422081 is an equidigital number, since it uses as much as digits as its factorization.

281422081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9651.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 281422081 is about 16775.6395109099. The cubic root of 281422081 is about 655.3189449536.

The spelling of 281422081 in words is "two hundred eighty-one million, four hundred twenty-two thousand, eighty-one".