561461893 has 2 divisors, whose sum is σ = 561461894. Its totient is φ = 561461892.

The previous prime is 561461851. The next prime is 561461903. The reversal of 561461893 is 398164165.

561461893 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., 559700964 + 1760929 = 23658^2 + 1327^2 .

It is a cyclic number.

It is not a de Polignac number, because 561461893 - 2¹³ = 561453701 is a prime.

It is a super-2 number, since 2×561461893² = 630478914582286898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561461843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280730946 + 280730947.

It is an arithmetic number, because the mean of its divisors is an integer number (280730947).

Almost surely, 2^561461893 is an apocalyptic number.

It is an amenable number.

561461893 is a deficient number, since it is larger than the sum of its proper divisors (1).

561461893 is an equidigital number, since it uses as much as digits as its factorization.

561461893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 561461893 is about 23695.1871273472. The cubic root of 561461893 is about 824.9736841315.

The spelling of 561461893 in words is "five hundred sixty-one million, four hundred sixty-one thousand, eight hundred ninety-three".