243252077 has 2 divisors, whose sum is σ = 243252078. Its totient is φ = 243252076.

The previous prime is 243252073. The next prime is 243252083. The reversal of 243252077 is 770252342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142229476 + 101022601 = 11926^2 + 10051^2 .

It is a cyclic number.

It is not a de Polignac number, because 243252077 - 2² = 243252073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243252073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121626038 + 121626039.

It is an arithmetic number, because the mean of its divisors is an integer number (121626039).

Almost surely, 2^243252077 is an apocalyptic number.

It is an amenable number.

243252077 is a deficient number, since it is larger than the sum of its proper divisors (1).

243252077 is an equidigital number, since it uses as much as digits as its factorization.

243252077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 243252077 is about 15596.5405459031. The cubic root of 243252077 is about 624.2408506543.

The spelling of 243252077 in words is "two hundred forty-three million, two hundred fifty-two thousand, seventy-seven".