229643251 has 4 divisors (see below), whose sum is σ = 229717600. Its totient is φ = 229568904.

The previous prime is 229643231. The next prime is 229643273. The reversal of 229643251 is 152346922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 229643251 - 2⁹ = 229642739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229643231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32331 + ... + 38788.

It is an arithmetic number, because the mean of its divisors is an integer number (57429400).

Almost surely, 2^229643251 is an apocalyptic number.

229643251 is a deficient number, since it is larger than the sum of its proper divisors (74349).

229643251 is an equidigital number, since it uses as much as digits as its factorization.

229643251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74348.

The product of its digits is 25920, while the sum is 34.

The square root of 229643251 is about 15153.9846575084. The cubic root of 229643251 is about 612.3756246695.

The spelling of 229643251 in words is "two hundred twenty-nine million, six hundred forty-three thousand, two hundred fifty-one".