655012271 has 2 divisors, whose sum is σ = 655012272. Its totient is φ = 655012270.

The previous prime is 655012229. The next prime is 655012333. The reversal of 655012271 is 172210556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655012271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655012201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327506135 + 327506136.

It is an arithmetic number, because the mean of its divisors is an integer number (327506136).

Almost surely, 2^655012271 is an apocalyptic number.

655012271 is a deficient number, since it is larger than the sum of its proper divisors (1).

655012271 is an equidigital number, since it uses as much as digits as its factorization.

655012271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 655012271 is about 25593.2075168393. The cubic root of 655012271 is about 868.4599835487.

The spelling of 655012271 in words is "six hundred fifty-five million, twelve thousand, two hundred seventy-one".