513866133 has 32 divisors (see below), whose sum is σ = 839099520. Its totient is φ = 308206080.

The previous prime is 513866113. The next prime is 513866147. The reversal of 513866133 is 331668315.

It is a happy number.

513866133 is a `hidden beast` number, since 5 + 1 + 38 + 6 + 613 + 3 = 666.

It is not a de Polignac number, because 513866133 - 2¹³ = 513857941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513866113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19891 + ... + 37727.

It is an arithmetic number, because the mean of its divisors is an integer number (26221860).

Almost surely, 2^513866133 is an apocalyptic number.

It is an amenable number.

513866133 is a deficient number, since it is larger than the sum of its proper divisors (325233387).

513866133 is a wasteful number, since it uses less digits than its factorization.

513866133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17954 (or 17948 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 513866133 is about 22668.6155951351. The cubic root of 513866133 is about 800.9707658115.

The spelling of 513866133 in words is "five hundred thirteen million, eight hundred sixty-six thousand, one hundred thirty-three".