229267561 has 2 divisors, whose sum is σ = 229267562. Its totient is φ = 229267560.

The previous prime is 229267541. The next prime is 229267589. The reversal of 229267561 is 165762922.

229267561 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., 229219600 + 47961 = 15140^2 + 219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229267561 is a prime.

It is a super-2 number, since 2×229267561² = 105127229053777442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (229267541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114633780 + 114633781.

It is an arithmetic number, because the mean of its divisors is an integer number (114633781).

Almost surely, 2^229267561 is an apocalyptic number.

It is an amenable number.

229267561 is a deficient number, since it is larger than the sum of its proper divisors (1).

229267561 is an equidigital number, since it uses as much as digits as its factorization.

229267561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 229267561 is about 15141.5838339323. The cubic root of 229267561 is about 612.0414992079.

The spelling of 229267561 in words is "two hundred twenty-nine million, two hundred sixty-seven thousand, five hundred sixty-one".