229416561 has 12 divisors (see below), whose sum is σ = 361505040. Its totient is φ = 139040280.

The previous prime is 229416557. The next prime is 229416569. The reversal of 229416561 is 165614922.

229416561 is a `hidden beast` number, since 2 + 2 + 94 + 1 + 6 + 561 = 666.

It is not a de Polignac number, because 229416561 - 2² = 229416557 is a prime.

It is a super-2 number, since 2×229416561² = 105263916922133442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (229416569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1158571 + ... + 1158768.

It is an arithmetic number, because the mean of its divisors is an integer number (30125420).

Almost surely, 2^229416561 is an apocalyptic number.

It is an amenable number.

229416561 is a deficient number, since it is larger than the sum of its proper divisors (132088479).

229416561 is a wasteful number, since it uses less digits than its factorization.

229416561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317356 (or 2317353 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 229416561 is about 15146.5032598287. The cubic root of 229416561 is about 612.1740582066.

The spelling of 229416561 in words is "two hundred twenty-nine million, four hundred sixteen thousand, five hundred sixty-one".