163233557 has 2 divisors, whose sum is σ = 163233558. Its totient is φ = 163233556.

The previous prime is 163233517. The next prime is 163233563. The reversal of 163233557 is 755332361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83649316 + 79584241 = 9146^2 + 8921^2 .

It is a cyclic number.

It is not a de Polignac number, because 163233557 - 2⁶ = 163233493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163233517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81616778 + 81616779.

It is an arithmetic number, because the mean of its divisors is an integer number (81616779).

Almost surely, 2^163233557 is an apocalyptic number.

It is an amenable number.

163233557 is a deficient number, since it is larger than the sum of its proper divisors (1).

163233557 is an equidigital number, since it uses as much as digits as its factorization.

163233557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 35.

The square root of 163233557 is about 12776.2888586631. The cubic root of 163233557 is about 546.5163361093.

The spelling of 163233557 in words is "one hundred sixty-three million, two hundred thirty-three thousand, five hundred fifty-seven".