562749821 has 2 divisors, whose sum is σ = 562749822. Its totient is φ = 562749820.

The previous prime is 562749799. The next prime is 562749833. The reversal of 562749821 is 128947265.

It is a happy number.

562749821 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., 388641796 + 174108025 = 19714^2 + 13195^2 .

It is a cyclic number.

It is not a de Polignac number, because 562749821 - 2⁶ = 562749757 is a prime.

It is a super-2 number, since 2×562749821² = 633374722071064082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (562749841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281374910 + 281374911.

It is an arithmetic number, because the mean of its divisors is an integer number (281374911).

Almost surely, 2^562749821 is an apocalyptic number.

It is an amenable number.

562749821 is a deficient number, since it is larger than the sum of its proper divisors (1).

562749821 is an equidigital number, since it uses as much as digits as its factorization.

562749821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 562749821 is about 23722.3485557396. The cubic root of 562749821 is about 825.6040001761.

The spelling of 562749821 in words is "five hundred sixty-two million, seven hundred forty-nine thousand, eight hundred twenty-one".