545506513 has 2 divisors, whose sum is σ = 545506514. Its totient is φ = 545506512.

The previous prime is 545506459. The next prime is 545506537. The reversal of 545506513 is 315605545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505665169 + 39841344 = 22487^2 + 6312^2 .

It is a cyclic number.

It is not a de Polignac number, because 545506513 - 2²⁵ = 511952081 is a prime.

It is not a weakly prime, because it can be changed into another prime (545506553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272753256 + 272753257.

It is an arithmetic number, because the mean of its divisors is an integer number (272753257).

Almost surely, 2^545506513 is an apocalyptic number.

It is an amenable number.

545506513 is a deficient number, since it is larger than the sum of its proper divisors (1).

545506513 is an equidigital number, since it uses as much as digits as its factorization.

545506513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 545506513 is about 23356.0808570274. The cubic root of 545506513 is about 817.0838878999.

The spelling of 545506513 in words is "five hundred forty-five million, five hundred six thousand, five hundred thirteen".