6551545 has 72 divisors (see below), whose sum is σ = 11462472. Its totient is φ = 3548160.

The previous prime is 6551533. The next prime is 6551563. The reversal of 6551545 is 5451556.

6551545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 480249 + 6071296 = 693^2 + 2464^2 .

It is not a de Polignac number, because 6551545 - 2⁷ = 6551417 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 385377 + ... + 385393.

It is an arithmetic number, because the mean of its divisors is an integer number (159201).

Almost surely, 2^6551545 is an apocalyptic number.

6551545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6551545 is a deficient number, since it is larger than the sum of its proper divisors (4910927).

6551545 is a wasteful number, since it uses less digits than its factorization.

6551545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 53 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 6551545 is about 2559.5986013436. The cubic root of 6551545 is about 187.1175731212.

The spelling of 6551545 in words is "six million, five hundred fifty-one thousand, five hundred forty-five".