545544720 has 480 divisors, whose sum is σ = 2296519680. Its totient is φ = 117573120.

The previous prime is 545544719. The next prime is 545544721. The reversal of 545544720 is 27445545.

It is a happy number.

545544720 is a `hidden beast` number, since 5 + 45 + 544 + 72 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (545544719) and next prime (545544721).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (545544721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2585415 + ... + 2585625.

It is an arithmetic number, because the mean of its divisors is an integer number (4784416).

Almost surely, 2^545544720 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 545544720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148259840).

545544720 is an abundant number, since it is smaller than the sum of its proper divisors (1750974960).

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

545544720 is a wasteful number, since it uses less digits than its factorization.

545544720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 36.

The square root of 545544720 is about 23356.8987667456. The cubic root of 545544720 is about 817.1029635019.

The spelling of 545544720 in words is "five hundred forty-five million, five hundred forty-four thousand, seven hundred twenty".