450240530521 has 4 divisors (see below), whose sum is σ = 454371177700. Its totient is φ = 446109883344.

The previous prime is 450240530507. The next prime is 450240530539. The reversal of 450240530521 is 125035042054.

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 207648819225 + 242591711296 = 455685^2 + 492536^2 .

It is a cyclic number.

It is not a de Polignac number, because 450240530521 - 2⁵ = 450240530489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450240530501) 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, 2065323426 + ... + 2065323643.

It is an arithmetic number, because the mean of its divisors is an integer number (113592794425).

Almost surely, 2^450240530521 is an apocalyptic number.

It is an amenable number.

450240530521 is a deficient number, since it is larger than the sum of its proper divisors (4130647179).

450240530521 is a wasteful number, since it uses less digits than its factorization.

450240530521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130647178.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 450240530521 its reverse (125035042054), we get a palindrome (575275572575).

The spelling of 450240530521 in words is "four hundred fifty billion, two hundred forty million, five hundred thirty thousand, five hundred twenty-one".