6540212550 has 96 divisors (see below), whose sum is σ = 16420377600. Its totient is φ = 1722591360.

The previous prime is 6540212513. The next prime is 6540212563. The reversal of 6540212550 is 552120456.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9924121 + ... + 9924779.

It is an arithmetic number, because the mean of its divisors is an integer number (171045600).

Almost surely, 2^6540212550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6540212550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8210188800).

6540212550 is an abundant number, since it is smaller than the sum of its proper divisors (9880165050).

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

6540212550 is a wasteful number, since it uses less digits than its factorization.

6540212550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 6540212550 is about 80871.5806077759. The cubic root of 6540212550 is about 1870.0962279020.

The spelling of 6540212550 in words is "six billion, five hundred forty million, two hundred twelve thousand, five hundred fifty".