561100163 has 8 divisors (see below), whose sum is σ = 618314928. Its totient is φ = 505893024.

The previous prime is 561100159. The next prime is 561100193. The reversal of 561100163 is 361001165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561100163 - 2² = 561100159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561100193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501320 + ... + 502437.

It is an arithmetic number, because the mean of its divisors is an integer number (77289366).

Almost surely, 2^561100163 is an apocalyptic number.

561100163 is a deficient number, since it is larger than the sum of its proper divisors (57214765).

561100163 is a wasteful number, since it uses less digits than its factorization.

561100163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003813.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 561100163 is about 23687.5529128697. The cubic root of 561100163 is about 824.7964789676.

The spelling of 561100163 in words is "five hundred sixty-one million, one hundred thousand, one hundred sixty-three".