6545280 has 128 divisors (see below), whose sum is σ = 23892480. Its totient is φ = 1492992.

The previous prime is 6545261. The next prime is 6545293. The reversal of 6545280 is 825456.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13197 + ... + 13683.

It is an arithmetic number, because the mean of its divisors is an integer number (186660).

Almost surely, 2^6545280 is an apocalyptic number.

6545280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6545280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11946240).

6545280 is an abundant number, since it is smaller than the sum of its proper divisors (17347200).

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

6545280 is a wasteful number, since it uses less digits than its factorization.

6545280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 6545280 is about 2558.3744839253. The cubic root of 6545280 is about 187.0579095626.

The spelling of 6545280 in words is "six million, five hundred forty-five thousand, two hundred eighty".