450253549 has 4 divisors (see below), whose sum is σ = 453121564. Its totient is φ = 447385536.

The previous prime is 450253541. The next prime is 450253567. The reversal of 450253549 is 945352054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945352054 = 2 ⋅472676027.

It can be written as a sum of positive squares in 2 ways, for example, as 191268900 + 258984649 = 13830^2 + 16093^2 .

It is a cyclic number.

It is not a de Polignac number, because 450253549 - 2³ = 450253541 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 (450253541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433772 + ... + 1434085.

It is an arithmetic number, because the mean of its divisors is an integer number (113280391).

Almost surely, 2^450253549 is an apocalyptic number.

It is an amenable number.

450253549 is a deficient number, since it is larger than the sum of its proper divisors (2868015).

450253549 is a wasteful number, since it uses less digits than its factorization.

450253549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868014.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 450253549 is about 21219.1788012637. The cubic root of 450253549 is about 766.4533290676.

The spelling of 450253549 in words is "four hundred fifty million, two hundred fifty-three thousand, five hundred forty-nine".