561100219 has 2 divisors, whose sum is σ = 561100220. Its totient is φ = 561100218.

The previous prime is 561100193. The next prime is 561100223. The reversal of 561100219 is 912001165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561100219 - 2¹⁷ = 560969147 is a prime.

It is a super-2 number, since 2×561100219² = 629666911523695922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561100193 and 561100202.

It is not a weakly prime, because it can be changed into another prime (561100919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280550109 + 280550110.

It is an arithmetic number, because the mean of its divisors is an integer number (280550110).

Almost surely, 2^561100219 is an apocalyptic number.

561100219 is a deficient number, since it is larger than the sum of its proper divisors (1).

561100219 is an equidigital number, since it uses as much as digits as its factorization.

561100219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 561100219 is about 23687.5540949250. The cubic root of 561100219 is about 824.7965064069.

The spelling of 561100219 in words is "five hundred sixty-one million, one hundred thousand, two hundred nineteen".