283772161 has 4 divisors (see below), whose sum is σ = 287769024. Its totient is φ = 279775300.

The previous prime is 283772149. The next prime is 283772189. The reversal of 283772161 is 161277382.

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 a de Polignac number, because none of the positive numbers 2^k-283772161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 283772161.

It is not an unprimeable number, because it can be changed into a prime (283772141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998325 + ... + 1998466.

It is an arithmetic number, because the mean of its divisors is an integer number (71942256).

Almost surely, 2^283772161 is an apocalyptic number.

It is an amenable number.

283772161 is a deficient number, since it is larger than the sum of its proper divisors (3996863).

283772161 is an equidigital number, since it uses as much as digits as its factorization.

283772161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996862.

The product of its digits is 28224, while the sum is 37.

The square root of 283772161 is about 16845.5383113749. The cubic root of 283772161 is about 657.1380214402.

The spelling of 283772161 in words is "two hundred eighty-three million, seven hundred seventy-two thousand, one hundred sixty-one".