512045821 has 8 divisors (see below), whose sum is σ = 586767104. Its totient is φ = 437717520.

The previous prime is 512045819. The next prime is 512045851. The reversal of 512045821 is 128540215.

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

It is a cyclic number.

It is not a de Polignac number, because 512045821 - 2¹ = 512045819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 512045821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512045851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95445 + ... + 100666.

It is an arithmetic number, because the mean of its divisors is an integer number (73345888).

Almost surely, 2^512045821 is an apocalyptic number.

It is an amenable number.

512045821 is a deficient number, since it is larger than the sum of its proper divisors (74721283).

512045821 is a wasteful number, since it uses less digits than its factorization.

512045821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196491.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 512045821 is about 22628.4294859365. The cubic root of 512045821 is about 800.0238643923.

The spelling of 512045821 in words is "five hundred twelve million, forty-five thousand, eight hundred twenty-one".