6559951 has 8 divisors (see below), whose sum is σ = 6746960. Its totient is φ = 6374592.

The previous prime is 6559939. The next prime is 6559957. The reversal of 6559951 is 1599556.

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

It is a cyclic number.

It is not a de Polignac number, because 6559951 - 2⁷ = 6559823 is a prime.

It is a Duffinian number.

6559951 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6559957) 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 7 ways as a sum of consecutive naturals, for example, 15835 + ... + 16243.

It is an arithmetic number, because the mean of its divisors is an integer number (843370).

Almost surely, 2^6559951 is an apocalyptic number.

6559951 is a deficient number, since it is larger than the sum of its proper divisors (187009).

6559951 is a wasteful number, since it uses less digits than its factorization.

6559951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825.

The product of its digits is 60750, while the sum is 40.

The square root of 6559951 is about 2561.2401293124. The cubic root of 6559951 is about 187.1975663690.

The spelling of 6559951 in words is "six million, five hundred fifty-nine thousand, nine hundred fifty-one".