6551537 has 4 divisors (see below), whose sum is σ = 6662640. Its totient is φ = 6440436.

The previous prime is 6551533. The next prime is 6551563. The reversal of 6551537 is 7351556.

6551537 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6551537 - 2² = 6551533 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6551533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55463 + ... + 55580.

It is an arithmetic number, because the mean of its divisors is an integer number (1665660).

Almost surely, 2^6551537 is an apocalyptic number.

It is an amenable number.

6551537 is a deficient number, since it is larger than the sum of its proper divisors (111103).

6551537 is a wasteful number, since it uses less digits than its factorization.

6551537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111102.

The product of its digits is 15750, while the sum is 32.

The square root of 6551537 is about 2559.5970385981. The cubic root of 6551537 is about 187.1174969589.

The spelling of 6551537 in words is "six million, five hundred fifty-one thousand, five hundred thirty-seven".