450143540 has 48 divisors (see below), whose sum is σ = 1178561664. Its totient is φ = 140304000.

The previous prime is 450143489. The next prime is 450143569. The reversal of 450143540 is 45341054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144611 + ... + 147690.

It is an arithmetic number, because the mean of its divisors is an integer number (24553368).

Almost surely, 2^450143540 is an apocalyptic number.

It is an amenable number.

450143540 is an abundant number, since it is smaller than the sum of its proper divisors (728418124).

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

450143540 is a wasteful number, since it uses less digits than its factorization.

450143540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292328 (or 292326 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 450143540 is about 21216.5864360882. The cubic root of 450143540 is about 766.3909022917.

Adding to 450143540 its reverse (45341054), we get a palindrome (495484594).

The spelling of 450143540 in words is "four hundred fifty million, one hundred forty-three thousand, five hundred forty".