450545478 has 16 divisors (see below), whose sum is σ = 920263680. Its totient is φ = 146986376.

The previous prime is 450545477. The next prime is 450545483. The reversal of 450545478 is 874545054.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450545471) 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, 798558 + ... + 799121.

It is an arithmetic number, because the mean of its divisors is an integer number (57516480).

Almost surely, 2^450545478 is an apocalyptic number.

450545478 is an abundant number, since it is smaller than the sum of its proper divisors (469718202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450545478 is a wasteful number, since it uses less digits than its factorization.

450545478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597731.

The product of its (nonzero) digits is 448000, while the sum is 42.

The square root of 450545478 is about 21226.0565814755. The cubic root of 450545478 is about 766.6189406543.

The spelling of 450545478 in words is "four hundred fifty million, five hundred forty-five thousand, four hundred seventy-eight".