561156049 has 2 divisors, whose sum is σ = 561156050. Its totient is φ = 561156048.

The previous prime is 561156007. The next prime is 561156067. The reversal of 561156049 is 940651165.

561156049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398721024 + 162435025 = 19968^2 + 12745^2 .

It is a cyclic number.

It is not a de Polignac number, because 561156049 - 2¹¹ = 561154001 is a prime.

It is a super-2 number, since 2×561156049² = 629792222658580802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561155999 and 561156017.

It is not a weakly prime, because it can be changed into another prime (561186049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280578024 + 280578025.

It is an arithmetic number, because the mean of its divisors is an integer number (280578025).

Almost surely, 2^561156049 is an apocalyptic number.

It is an amenable number.

561156049 is a deficient number, since it is larger than the sum of its proper divisors (1).

561156049 is an equidigital number, since it uses as much as digits as its factorization.

561156049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 561156049 is about 23688.7325325776. The cubic root of 561156049 is about 824.8238615092.

The spelling of 561156049 in words is "five hundred sixty-one million, one hundred fifty-six thousand, forty-nine".