561066106 has 4 divisors (see below), whose sum is σ = 841599162. Its totient is φ = 280533052.

The previous prime is 561066041. The next prime is 561066127. The reversal of 561066106 is 601660165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601660165 = 5 ⋅120332033.

It can be written as a sum of positive squares in only one way, i.e., 427455625 + 133610481 = 20675^2 + 11559^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140266525 + ... + 140266528.

Almost surely, 2^561066106 is an apocalyptic number.

561066106 is a deficient number, since it is larger than the sum of its proper divisors (280533056).

561066106 is a wasteful number, since it uses less digits than its factorization.

561066106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280533055.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 561066106 is about 23686.8340223002. The cubic root of 561066106 is about 824.7797911200.

The spelling of 561066106 in words is "five hundred sixty-one million, sixty-six thousand, one hundred six".