561771041 has 6 divisors (see below), whose sum is σ = 608308470. Its totient is φ = 518557728.

The previous prime is 561771017. The next prime is 561771047. The reversal of 561771041 is 140177165.

561771041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 38688400 + 523082641 = 6220^2 + 22871^2 .

It is not a de Polignac number, because 561771041 - 2²² = 557576737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561770989 and 561771007.

It is not an unprimeable number, because it can be changed into a prime (561771047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1661876 + ... + 1662213.

It is an arithmetic number, because the mean of its divisors is an integer number (101384745).

Almost surely, 2^561771041 is an apocalyptic number.

It is an amenable number.

561771041 is a deficient number, since it is larger than the sum of its proper divisors (46537429).

561771041 is a wasteful number, since it uses less digits than its factorization.

561771041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324115 (or 3324102 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 561771041 is about 23701.7096640728. The cubic root of 561771041 is about 825.1250699885.

The spelling of 561771041 in words is "five hundred sixty-one million, seven hundred seventy-one thousand, forty-one".