147228247 has 2 divisors, whose sum is σ = 147228248. Its totient is φ = 147228246.

The previous prime is 147228239. The next prime is 147228251. The reversal of 147228247 is 742822741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147228247 - 2³ = 147228239 is a prime.

It is equal to p_8297254 and since 147228247 and 8297254 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147228287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73614123 + 73614124.

It is an arithmetic number, because the mean of its divisors is an integer number (73614124).

Almost surely, 2^147228247 is an apocalyptic number.

147228247 is a deficient number, since it is larger than the sum of its proper divisors (1).

147228247 is an equidigital number, since it uses as much as digits as its factorization.

147228247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50176, while the sum is 37.

The square root of 147228247 is about 12133.7647496562. The cubic root of 147228247 is about 528.0362203018.

The spelling of 147228247 in words is "one hundred forty-seven million, two hundred twenty-eight thousand, two hundred forty-seven".