655211287 has 2 divisors, whose sum is σ = 655211288. Its totient is φ = 655211286.

The previous prime is 655211273. The next prime is 655211329. The reversal of 655211287 is 782112556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655211287 - 2¹⁵ = 655178519 is a prime.

It is a super-2 number, since 2×655211287² = 858603661224392738, 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 (655211087) 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, 327605643 + 327605644.

It is an arithmetic number, because the mean of its divisors is an integer number (327605644).

Almost surely, 2^655211287 is an apocalyptic number.

655211287 is a deficient number, since it is larger than the sum of its proper divisors (1).

655211287 is an equidigital number, since it uses as much as digits as its factorization.

655211287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 37.

The square root of 655211287 is about 25597.0952844263. The cubic root of 655211287 is about 868.5479309751.

The spelling of 655211287 in words is "six hundred fifty-five million, two hundred eleven thousand, two hundred eighty-seven".