229251261 has 16 divisors (see below), whose sum is σ = 310953600. Its totient is φ = 150205440.

The previous prime is 229251257. The next prime is 229251271. The reversal of 229251261 is 162152922.

It is not a de Polignac number, because 229251261 - 2² = 229251257 is a prime.

It is a super-2 number, since 2×229251261² = 105112281340180242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229251271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73665 + ... + 76713.

It is an arithmetic number, because the mean of its divisors is an integer number (19434600).

Almost surely, 2^229251261 is an apocalyptic number.

It is an amenable number.

229251261 is a deficient number, since it is larger than the sum of its proper divisors (81702339).

229251261 is a wasteful number, since it uses less digits than its factorization.

229251261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476.

The product of its digits is 4320, while the sum is 30.

The square root of 229251261 is about 15141.0455715581. The cubic root of 229251261 is about 612.0269943025.

The spelling of 229251261 in words is "two hundred twenty-nine million, two hundred fifty-one thousand, two hundred sixty-one".