512880421 has 4 divisors (see below), whose sum is σ = 526742092. Its totient is φ = 499018752.

The previous prime is 512880397. The next prime is 512880481. The reversal of 512880421 is 124088215.

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

It can be written as a sum of positive squares in 2 ways, for example, as 204175521 + 308704900 = 14289^2 + 17570^2 .

It is a cyclic number.

It is not a de Polignac number, because 512880421 - 2⁹ = 512879909 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 (512880481) 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 3 ways as a sum of consecutive naturals, for example, 6930780 + ... + 6930853.

It is an arithmetic number, because the mean of its divisors is an integer number (131685523).

Almost surely, 2^512880421 is an apocalyptic number.

It is an amenable number.

512880421 is a deficient number, since it is larger than the sum of its proper divisors (13861671).

512880421 is a wasteful number, since it uses less digits than its factorization.

512880421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861670.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 512880421 is about 22646.8633810512. The cubic root of 512880421 is about 800.4582900169.

The spelling of 512880421 in words is "five hundred twelve million, eight hundred eighty thousand, four hundred twenty-one".