561056579 has 4 divisors (see below), whose sum is σ = 563994240. Its totient is φ = 558118920.

The previous prime is 561056543. The next prime is 561056581. The reversal of 561056579 is 975650165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561056579 - 2¹⁶ = 560991043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561056519) 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, 1468544 + ... + 1468925.

It is an arithmetic number, because the mean of its divisors is an integer number (140998560).

Almost surely, 2^561056579 is an apocalyptic number.

561056579 is a deficient number, since it is larger than the sum of its proper divisors (2937661).

561056579 is a wasteful number, since it uses less digits than its factorization.

561056579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937660.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 561056579 is about 23686.6329181672. The cubic root of 561056579 is about 824.7751227921.

The spelling of 561056579 in words is "five hundred sixty-one million, fifty-six thousand, five hundred seventy-nine".