6561130 has 8 divisors (see below), whose sum is σ = 11810052. Its totient is φ = 2624448.

The previous prime is 6561127. The next prime is 6561143. The reversal of 6561130 is 311656.

It can be written as a sum of positive squares in 2 ways, for example, as 6155361 + 405769 = 2481^2 + 637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 328047 + ... + 328066.

Almost surely, 2^6561130 is an apocalyptic number.

6561130 is a deficient number, since it is larger than the sum of its proper divisors (5248922).

6561130 is a wasteful number, since it uses less digits than its factorization.

6561130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656120.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 6561130 is about 2561.4702809129. The cubic root of 6561130 is about 187.2087805132.

Adding to 6561130 its reverse (311656), we get a palindrome (6872786).

The spelling of 6561130 in words is "six million, five hundred sixty-one thousand, one hundred thirty".