6542550 has 144 divisors (see below), whose sum is σ = 21046272. Its totient is φ = 1425600.

The previous prime is 6542537. The next prime is 6542551. The reversal of 6542550 is 552456.

6542550 is a `hidden beast` number, since 654 + 2 + 5 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 97617 + ... + 97683.

Almost surely, 2^6542550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6542550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10523136).

6542550 is an abundant number, since it is smaller than the sum of its proper divisors (14503722).

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

6542550 is a wasteful number, since it uses less digits than its factorization.

6542550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 6542550 is about 2557.8408863727. The cubic root of 6542550 is about 187.0318990070.

The spelling of 6542550 in words is "six million, five hundred forty-two thousand, five hundred fifty".