147280961 has 2 divisors, whose sum is σ = 147280962. Its totient is φ = 147280960.

The previous prime is 147280949. The next prime is 147280963. The reversal of 147280961 is 169082741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75777025 + 71503936 = 8705^2 + 8456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147280961 is a prime.

It is a Sophie Germain prime.

Together with 147280963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (147280963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73640480 + 73640481.

It is an arithmetic number, because the mean of its divisors is an integer number (73640481).

Almost surely, 2^147280961 is an apocalyptic number.

It is an amenable number.

147280961 is a deficient number, since it is larger than the sum of its proper divisors (1).

147280961 is an equidigital number, since it uses as much as digits as its factorization.

147280961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 147280961 is about 12135.9367582400. The cubic root of 147280961 is about 528.0992326212.

The spelling of 147280961 in words is "one hundred forty-seven million, two hundred eighty thousand, nine hundred sixty-one".