513066403 has 2 divisors, whose sum is σ = 513066404. Its totient is φ = 513066402.

The previous prime is 513066397. The next prime is 513066431. The reversal of 513066403 is 304660315.

It is an a-pointer prime, because the next prime (513066431) can be obtained adding 513066403 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513066403 - 2⁵ = 513066371 is a prime.

It is not a weakly prime, because it can be changed into another prime (513066473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256533201 + 256533202.

It is an arithmetic number, because the mean of its divisors is an integer number (256533202).

Almost surely, 2^513066403 is an apocalyptic number.

513066403 is a deficient number, since it is larger than the sum of its proper divisors (1).

513066403 is an equidigital number, since it uses as much as digits as its factorization.

513066403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 513066403 is about 22650.9691404143. The cubic root of 513066403 is about 800.5550330630. Note that the first 3 decimals are identical.

The spelling of 513066403 in words is "five hundred thirteen million, sixty-six thousand, four hundred three".