549513673 has 2 divisors, whose sum is σ = 549513674. Its totient is φ = 549513672.

The previous prime is 549513623. The next prime is 549513697. The reversal of 549513673 is 376315945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360506169 + 189007504 = 18987^2 + 13748^2 .

It is a cyclic number.

It is not a de Polignac number, because 549513673 - 2¹⁷ = 549382601 is a prime.

It is not a weakly prime, because it can be changed into another prime (549513623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274756836 + 274756837.

It is an arithmetic number, because the mean of its divisors is an integer number (274756837).

Almost surely, 2^549513673 is an apocalyptic number.

It is an amenable number.

549513673 is a deficient number, since it is larger than the sum of its proper divisors (1).

549513673 is an equidigital number, since it uses as much as digits as its factorization.

549513673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 43.

The square root of 549513673 is about 23441.7079795820. The cubic root of 549513673 is about 819.0797096575.

The spelling of 549513673 in words is "five hundred forty-nine million, five hundred thirteen thousand, six hundred seventy-three".