147764549 has 2 divisors, whose sum is σ = 147764550. Its totient is φ = 147764548.

The previous prime is 147764543. The next prime is 147764557. The reversal of 147764549 is 945467741.

147764549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121396324 + 26368225 = 11018^2 + 5135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147764549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147764543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73882274 + 73882275.

It is an arithmetic number, because the mean of its divisors is an integer number (73882275).

Almost surely, 2^147764549 is an apocalyptic number.

It is an amenable number.

147764549 is a deficient number, since it is larger than the sum of its proper divisors (1).

147764549 is an equidigital number, since it uses as much as digits as its factorization.

147764549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 147764549 is about 12155.8442323024. The cubic root of 147764549 is about 528.6765949810.

The spelling of 147764549 in words is "one hundred forty-seven million, seven hundred sixty-four thousand, five hundred forty-nine".