655055231 has 2 divisors, whose sum is σ = 655055232. Its totient is φ = 655055230.

The previous prime is 655055227. The next prime is 655055239. The reversal of 655055231 is 132550556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655055231 - 2² = 655055227 is a prime.

It is a super-2 number, since 2×655055231² = 858194711320926722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655055239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327527615 + 327527616.

It is an arithmetic number, because the mean of its divisors is an integer number (327527616).

Almost surely, 2^655055231 is an apocalyptic number.

655055231 is a deficient number, since it is larger than the sum of its proper divisors (1).

655055231 is an equidigital number, since it uses as much as digits as its factorization.

655055231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 655055231 is about 25594.0467882670. The cubic root of 655055231 is about 868.4789695672.

The spelling of 655055231 in words is "six hundred fifty-five million, fifty-five thousand, two hundred thirty-one".