512054209 has 4 divisors (see below), whose sum is σ = 512250304. Its totient is φ = 511858116.

The previous prime is 512054197. The next prime is 512054227. The reversal of 512054209 is 902450215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512054209 - 2⁹ = 512053697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512054239) 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, 94077 + ... + 99370.

It is an arithmetic number, because the mean of its divisors is an integer number (128062576).

Almost surely, 2^512054209 is an apocalyptic number.

It is an amenable number.

512054209 is a deficient number, since it is larger than the sum of its proper divisors (196095).

512054209 is a wasteful number, since it uses less digits than its factorization.

512054209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196094.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 512054209 is about 22628.6148272491. The cubic root of 512054209 is about 800.0282328578.

The spelling of 512054209 in words is "five hundred twelve million, fifty-four thousand, two hundred nine".