561862229 has 2 divisors, whose sum is σ = 561862230. Its totient is φ = 561862228.

The previous prime is 561862207. The next prime is 561862247. The reversal of 561862229 is 922268165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 542983204 + 18879025 = 23302^2 + 4345^2 .

It is a cyclic number.

It is not a de Polignac number, because 561862229 - 2¹² = 561858133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561862289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280931114 + 280931115.

It is an arithmetic number, because the mean of its divisors is an integer number (280931115).

Almost surely, 2^561862229 is an apocalyptic number.

It is an amenable number.

561862229 is a deficient number, since it is larger than the sum of its proper divisors (1).

561862229 is an equidigital number, since it uses as much as digits as its factorization.

561862229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 561862229 is about 23703.6332447159. The cubic root of 561862229 is about 825.1697129888.

The spelling of 561862229 in words is "five hundred sixty-one million, eight hundred sixty-two thousand, two hundred twenty-nine".