513445797 has 20 divisors (see below), whose sum is σ = 807370080. Its totient is φ = 324280584.

The previous prime is 513445787. The next prime is 513445799. The reversal of 513445797 is 797544315.

513445797 is a `hidden beast` number, since 513 + 4 + 45 + 7 + 97 = 666.

It is not a de Polignac number, because 513445797 - 2⁶ = 513445733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513445799) 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 in 19 ways as a sum of consecutive naturals, for example, 165273 + ... + 168350.

It is an arithmetic number, because the mean of its divisors is an integer number (40368504).

Almost surely, 2^513445797 is an apocalyptic number.

513445797 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

513445797 is a deficient number, since it is larger than the sum of its proper divisors (293924283).

513445797 is a wasteful number, since it uses less digits than its factorization.

513445797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333654 (or 333645 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 513445797 is about 22659.3423779244. The cubic root of 513445797 is about 800.7523115832.

The spelling of 513445797 in words is "five hundred thirteen million, four hundred forty-five thousand, seven hundred ninety-seven".