545891648 has 28 divisors (see below), whose sum is σ = 1118201472. Its totient is φ = 264140160.

The previous prime is 545891609. The next prime is 545891663. The reversal of 545891648 is 846198545.

It is a junction number, because it is equal to n+sod(n) for n = 545891596 and 545891605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135590 + ... + 139557.

Almost surely, 2^545891648 is an apocalyptic number.

It is an amenable number.

545891648 is an abundant number, since it is smaller than the sum of its proper divisors (572309824).

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

545891648 is a wasteful number, since it uses less digits than its factorization.

545891648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275190 (or 275180 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The square root of 545891648 is about 23364.3242572945. The cubic root of 545891648 is about 817.2761334349.

The spelling of 545891648 in words is "five hundred forty-five million, eight hundred ninety-one thousand, six hundred forty-eight".