512472823 has 4 divisors (see below), whose sum is σ = 512747440. Its totient is φ = 512198208.

The previous prime is 512472799. The next prime is 512472841. The reversal of 512472823 is 328274215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512472823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512472523) 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, 134490 + ... + 138247.

It is an arithmetic number, because the mean of its divisors is an integer number (128186860).

Almost surely, 2^512472823 is an apocalyptic number.

512472823 is a deficient number, since it is larger than the sum of its proper divisors (274617).

512472823 is a wasteful number, since it uses less digits than its factorization.

512472823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274616.

The product of its digits is 26880, while the sum is 34.

The square root of 512472823 is about 22637.8625978691. The cubic root of 512472823 is about 800.2461862118.

The spelling of 512472823 in words is "five hundred twelve million, four hundred seventy-two thousand, eight hundred twenty-three".