234541561 has 2 divisors, whose sum is σ = 234541562. Its totient is φ = 234541560.

The previous prime is 234541547. The next prime is 234541591. The reversal of 234541561 is 165145432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162817600 + 71723961 = 12760^2 + 8469^2 .

It is a cyclic number.

It is not a de Polignac number, because 234541561 - 2¹⁵ = 234508793 is a prime.

It is not a weakly prime, because it can be changed into another prime (234541501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117270780 + 117270781.

It is an arithmetic number, because the mean of its divisors is an integer number (117270781).

Almost surely, 2^234541561 is an apocalyptic number.

It is an amenable number.

234541561 is a deficient number, since it is larger than the sum of its proper divisors (1).

234541561 is an equidigital number, since it uses as much as digits as its factorization.

234541561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 234541561 is about 15314.7497857458. The cubic root of 234541561 is about 616.6990372424.

Adding to 234541561 its reverse (165145432), we get a palindrome (399686993).

The spelling of 234541561 in words is "two hundred thirty-four million, five hundred forty-one thousand, five hundred sixty-one".