6551424 has 144 divisors (see below), whose sum is σ = 21162960. Its totient is φ = 1943040.

The previous prime is 6551423. The next prime is 6551429. The reversal of 6551424 is 4241556.

6551424 is a `hidden beast` number, since 655 + 1 + 4 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139369 + ... + 139415.

It is an arithmetic number, because the mean of its divisors is an integer number (146965).

Almost surely, 2^6551424 is an apocalyptic number.

6551424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6551424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10581480).

6551424 is an abundant number, since it is smaller than the sum of its proper divisors (14611536).

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

6551424 is a wasteful number, since it uses less digits than its factorization.

6551424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 63 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 6551424 is about 2559.5749647158. The cubic root of 6551424 is about 187.1164211606.

The spelling of 6551424 in words is "six million, five hundred fifty-one thousand, four hundred twenty-four".