6754521 has 4 divisors (see below), whose sum is σ = 9006032. Its totient is φ = 4503012.

The previous prime is 6754513. The next prime is 6754523. The reversal of 6754521 is 1254576.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6754521 - 2³ = 6754513 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6754523) 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 3 ways as a sum of consecutive naturals, for example, 1125751 + ... + 1125756.

It is an arithmetic number, because the mean of its divisors is an integer number (2251508).

Almost surely, 2^6754521 is an apocalyptic number.

It is an amenable number.

6754521 is a deficient number, since it is larger than the sum of its proper divisors (2251511).

6754521 is a wasteful number, since it uses less digits than its factorization.

6754521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251510.

The product of its digits is 8400, while the sum is 30.

The square root of 6754521 is about 2598.9461325699. The cubic root of 6754521 is about 189.0303414237.

Subtracting from 6754521 its reverse (1254576), we obtain a palindrome (5499945).

The spelling of 6754521 in words is "six million, seven hundred fifty-four thousand, five hundred twenty-one".