513975897 has 24 divisors (see below), whose sum is σ = 784985760. Its totient is φ = 323161920.

The previous prime is 513975863. The next prime is 513975901. The reversal of 513975897 is 798579315.

513975897 is a `hidden beast` number, since 51 + 3 + 9 + 7 + 589 + 7 = 666.

It is not a de Polignac number, because 513975897 - 2¹¹ = 513973849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513975857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32197 + ... + 45437.

It is an arithmetic number, because the mean of its divisors is an integer number (32707740).

Almost surely, 2^513975897 is an apocalyptic number.

513975897 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

513975897 is a deficient number, since it is larger than the sum of its proper divisors (271009863).

513975897 is a wasteful number, since it uses less digits than its factorization.

513975897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13493 (or 13490 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 54.

The square root of 513975897 is about 22671.0365224001. The cubic root of 513975897 is about 801.0277920098.

The spelling of 513975897 in words is "five hundred thirteen million, nine hundred seventy-five thousand, eight hundred ninety-seven".