500400532254221 has 4 divisors (see below), whose sum is σ = 500400739121052. Its totient is φ = 500400325387392.

The previous prime is 500400532254209. The next prime is 500400532254247. The reversal of 500400532254221 is 122452235004005.

It is a happy number.

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 59092828598596 + 441307703655625 = 7687186^2 + 21007325^2 .

It is a cyclic number.

It is not a de Polignac number, because 500400532254221 - 2¹⁰ = 500400532253197 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 (500400532254251) 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, 99761540 + ... + 104657373.

It is an arithmetic number, because the mean of its divisors is an integer number (125100184780263).

Almost surely, 2^{500400532254221} is an apocalyptic number.

It is an amenable number.

500400532254221 is a deficient number, since it is larger than the sum of its proper divisors (206866831).

500400532254221 is a wasteful number, since it uses less digits than its factorization.

500400532254221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206866830.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 500400532254221 its reverse (122452235004005), we get a palindrome (622852767258226).

The spelling of 500400532254221 in words is "five hundred trillion, four hundred billion, five hundred thirty-two million, two hundred fifty-four thousand, two hundred twenty-one".