545887673 has 2 divisors, whose sum is σ = 545887674. Its totient is φ = 545887672.

The previous prime is 545887669. The next prime is 545887687. The reversal of 545887673 is 376788545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356907664 + 188980009 = 18892^2 + 13747^2 .

It is a cyclic number.

It is not a de Polignac number, because 545887673 - 2² = 545887669 is a prime.

It is not a weakly prime, because it can be changed into another prime (545887373) 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, 272943836 + 272943837.

It is an arithmetic number, because the mean of its divisors is an integer number (272943837).

Almost surely, 2^545887673 is an apocalyptic number.

It is an amenable number.

545887673 is a deficient number, since it is larger than the sum of its proper divisors (1).

545887673 is an equidigital number, since it uses as much as digits as its factorization.

545887673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5644800, while the sum is 53.

The square root of 545887673 is about 23364.2391915508. The cubic root of 545887673 is about 817.2741497198.

The spelling of 545887673 in words is "five hundred forty-five million, eight hundred eighty-seven thousand, six hundred seventy-three".