655242547 has 2 divisors, whose sum is σ = 655242548. Its totient is φ = 655242546.

The previous prime is 655242503. The next prime is 655242571. The reversal of 655242547 is 745242556.

655242547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655242547 is a prime.

It is not a weakly prime, because it can be changed into another prime (655242047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327621273 + 327621274.

It is an arithmetic number, because the mean of its divisors is an integer number (327621274).

Almost surely, 2^655242547 is an apocalyptic number.

655242547 is a deficient number, since it is larger than the sum of its proper divisors (1).

655242547 is an equidigital number, since it uses as much as digits as its factorization.

655242547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 40.

The square root of 655242547 is about 25597.7058933022. The cubic root of 655242547 is about 868.5617435050.

Subtracting 655242547 from its reverse (745242556), we obtain a palindrome (90000009).

The spelling of 655242547 in words is "six hundred fifty-five million, two hundred forty-two thousand, five hundred forty-seven".