147228251 has 2 divisors, whose sum is σ = 147228252. Its totient is φ = 147228250.

The previous prime is 147228247. The next prime is 147228287. The reversal of 147228251 is 152822741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147228251 - 2² = 147228247 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147228751) 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, 73614125 + 73614126.

It is an arithmetic number, because the mean of its divisors is an integer number (73614126).

Almost surely, 2^147228251 is an apocalyptic number.

147228251 is a deficient number, since it is larger than the sum of its proper divisors (1).

147228251 is an equidigital number, since it uses as much as digits as its factorization.

147228251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 147228251 is about 12133.7649144855. The cubic root of 147228251 is about 528.0362250839.

The spelling of 147228251 in words is "one hundred forty-seven million, two hundred twenty-eight thousand, two hundred fifty-one".