229866551 has 2 divisors, whose sum is σ = 229866552. Its totient is φ = 229866550.

The previous prime is 229866517. The next prime is 229866569. The reversal of 229866551 is 155668922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229866551 - 2⁶ = 229866487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229866451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114933275 + 114933276.

It is an arithmetic number, because the mean of its divisors is an integer number (114933276).

Almost surely, 2^229866551 is an apocalyptic number.

229866551 is a deficient number, since it is larger than the sum of its proper divisors (1).

229866551 is an equidigital number, since it uses as much as digits as its factorization.

229866551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The square root of 229866551 is about 15161.3505664898. The cubic root of 229866551 is about 612.5740471911.

The spelling of 229866551 in words is "two hundred twenty-nine million, eight hundred sixty-six thousand, five hundred fifty-one".