500553421 has 4 divisors (see below), whose sum is σ = 501010812. Its totient is φ = 500096032.

The previous prime is 500553419. The next prime is 500553437. The reversal of 500553421 is 124355005.

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 345550921 + 155002500 = 18589^2 + 12450^2 .

It is a cyclic number.

It is not a de Polignac number, because 500553421 - 2¹ = 500553419 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 (500553721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227050 + ... + 229243.

It is an arithmetic number, because the mean of its divisors is an integer number (125252703).

Almost surely, 2^500553421 is an apocalyptic number.

It is an amenable number.

500553421 is a deficient number, since it is larger than the sum of its proper divisors (457391).

500553421 is a wasteful number, since it uses less digits than its factorization.

500553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457390.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 500553421 is about 22373.0512223970. The cubic root of 500553421 is about 793.9932517028.

The spelling of 500553421 in words is "five hundred million, five hundred fifty-three thousand, four hundred twenty-one".