513655197 has 32 divisors (see below), whose sum is σ = 766677120. Its totient is φ = 303264000.

The previous prime is 513655189. The next prime is 513655199. The reversal of 513655197 is 791556315.

It is not a de Polignac number, because 513655197 - 2³ = 513655189 is a prime.

It is a super-2 number, since 2×513655197² = 527683322810217618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513655199) 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 31 ways as a sum of consecutive naturals, for example, 218247 + ... + 220587.

It is an arithmetic number, because the mean of its divisors is an integer number (23958660).

Almost surely, 2^513655197 is an apocalyptic number.

It is an amenable number.

513655197 is a deficient number, since it is larger than the sum of its proper divisors (253021923).

513655197 is a wasteful number, since it uses less digits than its factorization.

513655197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525.

The product of its digits is 141750, while the sum is 42.

The square root of 513655197 is about 22663.9625176181. The cubic root of 513655197 is about 800.8611544545.

The spelling of 513655197 in words is "five hundred thirteen million, six hundred fifty-five thousand, one hundred ninety-seven".