545905920 has 288 divisors, whose sum is σ = 2081544192. Its totient is φ = 119218176.

The previous prime is 545905907. The next prime is 545905931. The reversal of 545905920 is 29509545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617799 + ... + 618681.

It is an arithmetic number, because the mean of its divisors is an integer number (7227584).

Almost surely, 2^545905920 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 545905920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040772096).

545905920 is an abundant number, since it is smaller than the sum of its proper divisors (1535638272).

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

545905920 is a wasteful number, since it uses less digits than its factorization.

545905920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 545905920 is about 23364.6296782123. The cubic root of 545905920 is about 817.2832557661.

The spelling of 545905920 in words is "five hundred forty-five million, nine hundred five thousand, nine hundred twenty".