452513230021 has 4 divisors (see below), whose sum is σ = 452516762700. Its totient is φ = 452509697344.

The previous prime is 452513229979. The next prime is 452513230031. The reversal of 452513230021 is 120032315254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120032315254 = 2 ⋅60016157627.

It can be written as a sum of positive squares in 2 ways, for example, as 222798160225 + 229715069796 = 472015^2 + 479286^2 .

It is a cyclic number.

It is not a de Polignac number, because 452513230021 - 2²⁵ = 452479675589 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 (452513230031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566676 + ... + 1832893.

It is an arithmetic number, because the mean of its divisors is an integer number (113129190675).

Almost surely, 2^452513230021 is an apocalyptic number.

It is an amenable number.

452513230021 is a deficient number, since it is larger than the sum of its proper divisors (3532679).

452513230021 is a wasteful number, since it uses less digits than its factorization.

452513230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532678.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 452513230021 its reverse (120032315254), we get a palindrome (572545545275).

The spelling of 452513230021 in words is "four hundred fifty-two billion, five hundred thirteen million, two hundred thirty thousand, twenty-one".