561484949 has 2 divisors, whose sum is σ = 561484950. Its totient is φ = 561484948.

The previous prime is 561484943. The next prime is 561484981. The reversal of 561484949 is 949484165.

561484949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551404324 + 10080625 = 23482^2 + 3175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561484949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561484897 and 561484906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561484943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280742474 + 280742475.

It is an arithmetic number, because the mean of its divisors is an integer number (280742475).

Almost surely, 2^561484949 is an apocalyptic number.

It is an amenable number.

561484949 is a deficient number, since it is larger than the sum of its proper divisors (1).

561484949 is an equidigital number, since it uses as much as digits as its factorization.

561484949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The square root of 561484949 is about 23695.6736346532. The cubic root of 561484949 is about 824.9849762798.

The spelling of 561484949 in words is "five hundred sixty-one million, four hundred eighty-four thousand, nine hundred forty-nine".