513239973 has 8 divisors (see below), whose sum is σ = 684850368. Its totient is φ = 341894784.

The previous prime is 513239971. The next prime is 513239977. The reversal of 513239973 is 379932315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513239973 - 2¹ = 513239971 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513239971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61740 + ... + 69557.

It is an arithmetic number, because the mean of its divisors is an integer number (85606296).

Almost surely, 2^513239973 is an apocalyptic number.

It is an amenable number.

513239973 is a deficient number, since it is larger than the sum of its proper divisors (171610395).

513239973 is a wasteful number, since it uses less digits than its factorization.

513239973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132603.

The product of its digits is 153090, while the sum is 42.

The square root of 513239973 is about 22654.8002198210. The cubic root of 513239973 is about 800.6452986180.

The spelling of 513239973 in words is "five hundred thirteen million, two hundred thirty-nine thousand, nine hundred seventy-three".