6540261 has 16 divisors (see below), whose sum is σ = 10733184. Its totient is φ = 3449664.

The previous prime is 6540251. The next prime is 6540269. The reversal of 6540261 is 1620456.

It is not a de Polignac number, because 6540261 - 2⁷ = 6540133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11706 + ... + 12251.

It is an arithmetic number, because the mean of its divisors is an integer number (670824).

Almost surely, 2^6540261 is an apocalyptic number.

It is an amenable number.

6540261 is a deficient number, since it is larger than the sum of its proper divisors (4192923).

6540261 is a wasteful number, since it uses less digits than its factorization.

6540261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23980.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6540261 is about 2557.3933995379. The cubic root of 6540261 is about 187.0100845792.

The spelling of 6540261 in words is "six million, five hundred forty thousand, two hundred sixty-one".