283804561 has 4 divisors (see below), whose sum is σ = 285372724. Its totient is φ = 282236400.

The previous prime is 283804529. The next prime is 283804571. The reversal of 283804561 is 165408382.

It is a happy number.

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 126427536 + 157377025 = 11244^2 + 12545^2 .

It is a cyclic number.

It is not a de Polignac number, because 283804561 - 2⁵ = 283804529 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 283804561.

It is not an unprimeable number, because it can be changed into a prime (283804571) 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, 783810 + ... + 784171.

It is an arithmetic number, because the mean of its divisors is an integer number (71343181).

Almost surely, 2^283804561 is an apocalyptic number.

It is an amenable number.

283804561 is a deficient number, since it is larger than the sum of its proper divisors (1568163).

283804561 is a wasteful number, since it uses less digits than its factorization.

283804561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568162.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 283804561 is about 16846.4999629003. The cubic root of 283804561 is about 657.1630303083.

The spelling of 283804561 in words is "two hundred eighty-three million, eight hundred four thousand, five hundred sixty-one".