545307440 has 40 divisors (see below), whose sum is σ = 1269146448. Its totient is φ = 217898240.

The previous prime is 545307403. The next prime is 545307449. The reversal of 545307440 is 44703545.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 545307397 and 545307406.

It is not an unprimeable number, because it can be changed into a prime (545307449) 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, 90110 + ... + 95970.

Almost surely, 2^545307440 is an apocalyptic number.

It is an amenable number.

545307440 is an abundant number, since it is smaller than the sum of its proper divisors (723839008).

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

545307440 is a wasteful number, since it uses less digits than its factorization.

545307440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037 (or 7031 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 545307440 is about 23351.8187728494. The cubic root of 545307440 is about 816.9844823459.

The spelling of 545307440 in words is "five hundred forty-five million, three hundred seven thousand, four hundred forty".