513500447 has 2 divisors, whose sum is σ = 513500448. Its totient is φ = 513500446.

The previous prime is 513500431. The next prime is 513500473. The reversal of 513500447 is 744005315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513500447 - 2⁴ = 513500431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513500347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256750223 + 256750224.

It is an arithmetic number, because the mean of its divisors is an integer number (256750224).

Almost surely, 2^513500447 is an apocalyptic number.

513500447 is a deficient number, since it is larger than the sum of its proper divisors (1).

513500447 is an equidigital number, since it uses as much as digits as its factorization.

513500447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 513500447 is about 22660.5482502079. The cubic root of 513500447 is about 800.7807206587.

The spelling of 513500447 in words is "five hundred thirteen million, five hundred thousand, four hundred forty-seven".