513173532 has 12 divisors (see below), whose sum is σ = 1197404936. Its totient is φ = 171057840.

The previous prime is 513173519. The next prime is 513173537. The reversal of 513173532 is 235371315.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 513173532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513173537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21382219 + ... + 21382242.

Almost surely, 2^513173532 is an apocalyptic number.

It is an amenable number.

513173532 is an abundant number, since it is smaller than the sum of its proper divisors (684231404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513173532 is a wasteful number, since it uses less digits than its factorization.

513173532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42764468 (or 42764466 counting only the distinct ones).

The product of its digits is 9450, while the sum is 30.

The square root of 513173532 is about 22653.3337943889. Note that the first 3 decimals coincide. The cubic root of 513173532 is about 800.6107481980.

The spelling of 513173532 in words is "five hundred thirteen million, one hundred seventy-three thousand, five hundred thirty-two".