216266527 has 2 divisors, whose sum is σ = 216266528. Its totient is φ = 216266526.

The previous prime is 216266489. The next prime is 216266549. The reversal of 216266527 is 725662612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216266527 - 2²³ = 207877919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216266587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108133263 + 108133264.

It is an arithmetic number, because the mean of its divisors is an integer number (108133264).

Almost surely, 2^216266527 is an apocalyptic number.

216266527 is a deficient number, since it is larger than the sum of its proper divisors (1).

216266527 is an equidigital number, since it uses as much as digits as its factorization.

216266527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 216266527 is about 14706.0030939749. The cubic root of 216266527 is about 600.2466828247.

The spelling of 216266527 in words is "two hundred sixteen million, two hundred sixty-six thousand, five hundred twenty-seven".