450021165 has 16 divisors (see below), whose sum is σ = 785491776. Its totient is φ = 218192000.

The previous prime is 450021157. The next prime is 450021167. The reversal of 450021165 is 561120054.

It is not a de Polignac number, because 450021165 - 2³ = 450021157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450021167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363536 + ... + 1363865.

It is an arithmetic number, because the mean of its divisors is an integer number (49093236).

Almost surely, 2^450021165 is an apocalyptic number.

It is an amenable number.

450021165 is a deficient number, since it is larger than the sum of its proper divisors (335470611).

450021165 is a wasteful number, since it uses less digits than its factorization.

450021165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727420.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 450021165 is about 21213.7022935649. The cubic root of 450021165 is about 766.3214462342.

The spelling of 450021165 in words is "four hundred fifty million, twenty-one thousand, one hundred sixty-five".