6540550 has 12 divisors (see below), whose sum is σ = 12165516. Its totient is φ = 2616200.

The previous prime is 6540539. The next prime is 6540557. The reversal of 6540550 is 550456.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65356 + ... + 65455.

It is an arithmetic number, because the mean of its divisors is an integer number (1013793).

Almost surely, 2^6540550 is an apocalyptic number.

6540550 is a deficient number, since it is larger than the sum of its proper divisors (5624966).

6540550 is a wasteful number, since it uses less digits than its factorization.

6540550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130823 (or 130818 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 6540550 is about 2557.4499017576. The cubic root of 6540550 is about 187.0128390624.

The spelling of 6540550 in words is "six million, five hundred forty thousand, five hundred fifty".