77201227 has 2 divisors, whose sum is σ = 77201228. Its totient is φ = 77201226.

The previous prime is 77201197. The next prime is 77201239. The reversal of 77201227 is 72210277.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77201227 - 2¹⁵ = 77168459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77201195 and 77201204.

It is not a weakly prime, because it can be changed into another prime (77201027) 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, 38600613 + 38600614.

It is an arithmetic number, because the mean of its divisors is an integer number (38600614).

Almost surely, 2^77201227 is an apocalyptic number.

77201227 is a deficient number, since it is larger than the sum of its proper divisors (1).

77201227 is an equidigital number, since it uses as much as digits as its factorization.

77201227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 77201227 is about 8786.4228785098. The cubic root of 77201227 is about 425.8023633772.

The spelling of 77201227 in words is "seventy-seven million, two hundred one thousand, two hundred twenty-seven".