545242240 has 64 divisors (see below), whose sum is σ = 1372104000. Its totient is φ = 206613504.

The previous prime is 545242237. The next prime is 545242303. The reversal of 545242240 is 42242545.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 545242199 and 545242208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10260 + ... + 34579.

It is an arithmetic number, because the mean of its divisors is an integer number (21439125).

Almost surely, 2^545242240 is an apocalyptic number.

It is an amenable number.

545242240 is an abundant number, since it is smaller than the sum of its proper divisors (826861760).

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

545242240 is a wasteful number, since it uses less digits than its factorization.

545242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44877 (or 44865 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 545242240 is about 23350.4226942469. The cubic root of 545242240 is about 816.9519199738.

Adding to 545242240 its reverse (42242545), we get a palindrome (587484785).

The spelling of 545242240 in words is "five hundred forty-five million, two hundred forty-two thousand, two hundred forty".