512821023 has 16 divisors (see below), whose sum is σ = 803300736. Its totient is φ = 286892640.

The previous prime is 512821021. The next prime is 512821051. The reversal of 512821023 is 320128215.

It is not a de Polignac number, because 512821023 - 2¹ = 512821021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 512820984 and 512821002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512821021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597265 + ... + 598122.

It is an arithmetic number, because the mean of its divisors is an integer number (50206296).

Almost surely, 2^512821023 is an apocalyptic number.

512821023 is a deficient number, since it is larger than the sum of its proper divisors (290479713).

512821023 is a wasteful number, since it uses less digits than its factorization.

512821023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195414.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 512821023 is about 22645.5519473472. The cubic root of 512821023 is about 800.4273877798.

Adding to 512821023 its reverse (320128215), we get a palindrome (832949238).

The spelling of 512821023 in words is "five hundred twelve million, eight hundred twenty-one thousand, twenty-three".