561105147 has 4 divisors (see below), whose sum is σ = 748140200. Its totient is φ = 374070096.

The previous prime is 561105109. The next prime is 561105157. The reversal of 561105147 is 741501165.

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

It is not a de Polignac number, because 561105147 - 2¹⁴ = 561088763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561105157) 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, 93517522 + ... + 93517527.

It is an arithmetic number, because the mean of its divisors is an integer number (187035050).

Almost surely, 2^561105147 is an apocalyptic number.

561105147 is a deficient number, since it is larger than the sum of its proper divisors (187035053).

561105147 is a wasteful number, since it uses less digits than its factorization.

561105147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187035052.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 561105147 is about 23687.6581155673. The cubic root of 561105147 is about 824.7989210589.

The spelling of 561105147 in words is "five hundred sixty-one million, one hundred five thousand, one hundred forty-seven".