281422897 has 4 divisors (see below), whose sum is σ = 321626176. Its totient is φ = 241219620.

The previous prime is 281422877. The next prime is 281422907. The reversal of 281422897 is 798224182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 281422897 - 2¹¹ = 281420849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281422837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20101629 + ... + 20101642.

It is an arithmetic number, because the mean of its divisors is an integer number (80406544).

Almost surely, 2^281422897 is an apocalyptic number.

It is an amenable number.

281422897 is a deficient number, since it is larger than the sum of its proper divisors (40203279).

281422897 is an equidigital number, since it uses as much as digits as its factorization.

281422897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40203278.

The product of its digits is 129024, while the sum is 43.

The square root of 281422897 is about 16775.6638318726. The cubic root of 281422897 is about 655.3195783317.

The spelling of 281422897 in words is "two hundred eighty-one million, four hundred twenty-two thousand, eight hundred ninety-seven".