655571311 has 2 divisors, whose sum is σ = 655571312. Its totient is φ = 655571310.

The previous prime is 655571239. The next prime is 655571327. The reversal of 655571311 is 113175556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655571311 - 2⁷ = 655571183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655571351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327785655 + 327785656.

It is an arithmetic number, because the mean of its divisors is an integer number (327785656).

Almost surely, 2^655571311 is an apocalyptic number.

655571311 is a deficient number, since it is larger than the sum of its proper divisors (1).

655571311 is an equidigital number, since it uses as much as digits as its factorization.

655571311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 34.

The square root of 655571311 is about 25604.1268353365. The cubic root of 655571311 is about 868.7069844236.

The spelling of 655571311 in words is "six hundred fifty-five million, five hundred seventy-one thousand, three hundred eleven".