561081039 has 32 divisors (see below), whose sum is σ = 838874880. Its totient is φ = 331494912.

The previous prime is 561081029. The next prime is 561081041. The reversal of 561081039 is 930180165.

It is not a de Polignac number, because 561081039 - 2¹⁶ = 561015503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561081029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165964 + ... + 169310.

It is an arithmetic number, because the mean of its divisors is an integer number (26214840).

Almost surely, 2^561081039 is an apocalyptic number.

561081039 is a deficient number, since it is larger than the sum of its proper divisors (277793841).

561081039 is a wasteful number, since it uses less digits than its factorization.

561081039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 561081039 is about 23687.1492375085. The cubic root of 561081039 is about 824.7871083370.

The spelling of 561081039 in words is "five hundred sixty-one million, eighty-one thousand, thirty-nine".