242752553 has 2 divisors, whose sum is σ = 242752554. Its totient is φ = 242752552.

The previous prime is 242752451. The next prime is 242752579. The reversal of 242752553 is 355257242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232013824 + 10738729 = 15232^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 242752553 - 2²² = 238558249 is a prime.

It is not a weakly prime, because it can be changed into another prime (242752253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121376276 + 121376277.

It is an arithmetic number, because the mean of its divisors is an integer number (121376277).

Almost surely, 2^242752553 is an apocalyptic number.

It is an amenable number.

242752553 is a deficient number, since it is larger than the sum of its proper divisors (1).

242752553 is an equidigital number, since it uses as much as digits as its factorization.

242752553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 35.

The square root of 242752553 is about 15580.5183803364. The cubic root of 242752553 is about 623.8132599565.

The spelling of 242752553 in words is "two hundred forty-two million, seven hundred fifty-two thousand, five hundred fifty-three".