545233640 has 128 divisors (see below), whose sum is σ = 1469664000. Its totient is φ = 178096128.

The previous prime is 545233613. The next prime is 545233643. The reversal of 545233640 is 46332545.

545233640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 545233597 and 545233606.

It is not an unprimeable number, because it can be changed into a prime (545233643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 673556 + ... + 674364.

It is an arithmetic number, because the mean of its divisors is an integer number (11481750).

Almost surely, 2^545233640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545233640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734832000).

545233640 is an abundant number, since it is smaller than the sum of its proper divisors (924430360).

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

545233640 is a wasteful number, since it uses less digits than its factorization.

545233640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 545233640 is about 23350.2385426787. The cubic root of 545233640 is about 816.9476247432.

The spelling of 545233640 in words is "five hundred forty-five million, two hundred thirty-three thousand, six hundred forty".