450525110621 has 2 divisors, whose sum is σ = 450525110622. Its totient is φ = 450525110620.

The previous prime is 450525110507. The next prime is 450525110639. The reversal of 450525110621 is 126011525054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256581758521 + 193943352100 = 506539^2 + 440390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450525110621 is a prime.

It is a super-3 number, since 3×450525110621³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450525170621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225262555310 + 225262555311.

It is an arithmetic number, because the mean of its divisors is an integer number (225262555311).

Almost surely, 2^450525110621 is an apocalyptic number.

It is an amenable number.

450525110621 is a deficient number, since it is larger than the sum of its proper divisors (1).

450525110621 is an equidigital number, since it uses as much as digits as its factorization.

450525110621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 450525110621 its reverse (126011525054), we get a palindrome (576536635675).

The spelling of 450525110621 in words is "four hundred fifty billion, five hundred twenty-five million, one hundred ten thousand, six hundred twenty-one".