547761961 has 2 divisors, whose sum is σ = 547761962. Its totient is φ = 547761960.

The previous prime is 547761953. The next prime is 547761967. The reversal of 547761961 is 169167745.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545923225 + 1838736 = 23365^2 + 1356^2 .

It is a cyclic number.

It is not a de Polignac number, because 547761961 - 2³ = 547761953 is a prime.

It is not a weakly prime, because it can be changed into another prime (547761967) 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, 273880980 + 273880981.

It is an arithmetic number, because the mean of its divisors is an integer number (273880981).

Almost surely, 2^547761961 is an apocalyptic number.

It is an amenable number.

547761961 is a deficient number, since it is larger than the sum of its proper divisors (1).

547761961 is an equidigital number, since it uses as much as digits as its factorization.

547761961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 547761961 is about 23404.3150081347. The cubic root of 547761961 is about 818.2084428639.

The spelling of 547761961 in words is "five hundred forty-seven million, seven hundred sixty-one thousand, nine hundred sixty-one".