547144649 has 2 divisors, whose sum is σ = 547144650. Its totient is φ = 547144648.

The previous prime is 547144639. The next prime is 547144667. The reversal of 547144649 is 946441745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324180025 + 222964624 = 18005^2 + 14932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-547144649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (547144639) 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, 273572324 + 273572325.

It is an arithmetic number, because the mean of its divisors is an integer number (273572325).

Almost surely, 2^547144649 is an apocalyptic number.

It is an amenable number.

547144649 is a deficient number, since it is larger than the sum of its proper divisors (1).

547144649 is an equidigital number, since it uses as much as digits as its factorization.

547144649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 547144649 is about 23391.1232949596. The cubic root of 547144649 is about 817.9009615211.

The spelling of 547144649 in words is "five hundred forty-seven million, one hundred forty-four thousand, six hundred forty-nine".