229251247 has 2 divisors, whose sum is σ = 229251248. Its totient is φ = 229251246.

The previous prime is 229251233. The next prime is 229251257. The reversal of 229251247 is 742152922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229251247 is a prime.

It is a super-2 number, since 2×229251247² = 105112268502110018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229251227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114625623 + 114625624.

It is an arithmetic number, because the mean of its divisors is an integer number (114625624).

Almost surely, 2^229251247 is an apocalyptic number.

229251247 is a deficient number, since it is larger than the sum of its proper divisors (1).

229251247 is an equidigital number, since it uses as much as digits as its factorization.

229251247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 229251247 is about 15141.0451092387. The cubic root of 229251247 is about 612.0269818440.

The spelling of 229251247 in words is "two hundred twenty-nine million, two hundred fifty-one thousand, two hundred forty-seven".