655550281 has 2 divisors, whose sum is σ = 655550282. Its totient is φ = 655550280.

The previous prime is 655550267. The next prime is 655550321. The reversal of 655550281 is 182055556.

655550281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648211600 + 7338681 = 25460^2 + 2709^2 .

It is a cyclic number.

It is not a de Polignac number, because 655550281 - 2²⁹ = 118679369 is a prime.

It is a super-2 number, since 2×655550281² = 859492341838357922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655550281.

It is not a weakly prime, because it can be changed into another prime (655850281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327775140 + 327775141.

It is an arithmetic number, because the mean of its divisors is an integer number (327775141).

Almost surely, 2^655550281 is an apocalyptic number.

It is an amenable number.

655550281 is a deficient number, since it is larger than the sum of its proper divisors (1).

655550281 is an equidigital number, since it uses as much as digits as its factorization.

655550281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60000, while the sum is 37.

The square root of 655550281 is about 25603.7161560583. The cubic root of 655550281 is about 868.6976952724.

The spelling of 655550281 in words is "six hundred fifty-five million, five hundred fifty thousand, two hundred eighty-one".