229561001 has 2 divisors, whose sum is σ = 229561002. Its totient is φ = 229561000.

The previous prime is 229560971. The next prime is 229561043. The reversal of 229561001 is 100165922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221295376 + 8265625 = 14876^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 229561001 - 2⁶ = 229560937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (229561201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114780500 + 114780501.

It is an arithmetic number, because the mean of its divisors is an integer number (114780501).

Almost surely, 2^229561001 is an apocalyptic number.

It is an amenable number.

229561001 is a deficient number, since it is larger than the sum of its proper divisors (1).

229561001 is an equidigital number, since it uses as much as digits as its factorization.

229561001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 229561001 is about 15151.2706067841. The cubic root of 229561001 is about 612.3025055896.

The spelling of 229561001 in words is "two hundred twenty-nine million, five hundred sixty-one thousand, one".