547231081 has 2 divisors, whose sum is σ = 547231082. Its totient is φ = 547231080.

The previous prime is 547231057. The next prime is 547231099. The reversal of 547231081 is 180132745.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540981081 + 6250000 = 23259^2 + 2500^2 .

It is a cyclic number.

It is not a de Polignac number, because 547231081 - 2⁵ = 547231049 is a prime.

It is a super-2 number, since 2×547231081² = 598923712024857122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (547231021) 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, 273615540 + 273615541.

It is an arithmetic number, because the mean of its divisors is an integer number (273615541).

Almost surely, 2^547231081 is an apocalyptic number.

It is an amenable number.

547231081 is a deficient number, since it is larger than the sum of its proper divisors (1).

547231081 is an equidigital number, since it uses as much as digits as its factorization.

547231081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 547231081 is about 23392.9707604656. The cubic root of 547231081 is about 817.9440269725.

The spelling of 547231081 in words is "five hundred forty-seven million, two hundred thirty-one thousand, eighty-one".