513545023 has 2 divisors, whose sum is σ = 513545024. Its totient is φ = 513545022.

The previous prime is 513544949. The next prime is 513545033. The reversal of 513545023 is 320545315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513545023 - 2¹⁷ = 513413951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513544982 and 513545000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513545033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256772511 + 256772512.

It is an arithmetic number, because the mean of its divisors is an integer number (256772512).

Almost surely, 2^513545023 is an apocalyptic number.

513545023 is a deficient number, since it is larger than the sum of its proper divisors (1).

513545023 is an equidigital number, since it uses as much as digits as its factorization.

513545023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 513545023 is about 22661.5317884736. The cubic root of 513545023 is about 800.8038914068.

The spelling of 513545023 in words is "five hundred thirteen million, five hundred forty-five thousand, twenty-three".