6551040 has 80 divisors (see below), whose sum is σ = 20967408. Its totient is φ = 1744896.

The previous prime is 6551011. The next prime is 6551047. The reversal of 6551040 is 401556.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×6551040² = 85832250163200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6550998 and 6551016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7254 + ... + 8106.

Almost surely, 2^6551040 is an apocalyptic number.

6551040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is a pronic number, being equal to 2559×2560.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10483704).

6551040 is an abundant number, since it is smaller than the sum of its proper divisors (14416368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6551040 is an equidigital number, since it uses as much as digits as its factorization.

6551040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 6551040 is about 2559.4999511623. The cubic root of 6551040 is about 187.1127652577.

Adding to 6551040 its reverse (401556), we get a palindrome (6952596).

The spelling of 6551040 in words is "six million, five hundred fifty-one thousand, forty".