450990545 has 8 divisors (see below), whose sum is σ = 541302696. Its totient is φ = 360716416.

The previous prime is 450990541. The next prime is 450990557. The reversal of 450990545 is 545099054.

450990545 = 15016² + 15017².

It can be written as a sum of positive squares in 4 ways, for example, as 192721 + 450797824 = 439^2 + 21232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 450990545 - 2² = 450990541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450990541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40949 + ... + 50781.

It is an arithmetic number, because the mean of its divisors is an integer number (67662837).

Almost surely, 2^450990545 is an apocalyptic number.

450990545 is the 15017-th centered square number.

It is an amenable number.

450990545 is a deficient number, since it is larger than the sum of its proper divisors (90312151).

450990545 is an equidigital number, since it uses as much as digits as its factorization.

450990545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19011.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 450990545 is about 21236.5379711477. The cubic root of 450990545 is about 766.8712899517.

The spelling of 450990545 in words is "four hundred fifty million, nine hundred ninety thousand, five hundred forty-five".