6551263 has 4 divisors (see below), whose sum is σ = 6562800. Its totient is φ = 6539728.

The previous prime is 6551249. The next prime is 6551291. The reversal of 6551263 is 3621556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6551263 - 2⁵ = 6551231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4870 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (1640700).

Almost surely, 2^6551263 is an apocalyptic number.

6551263 is a deficient number, since it is larger than the sum of its proper divisors (11537).

6551263 is a wasteful number, since it uses less digits than its factorization.

6551263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536.

The product of its digits is 5400, while the sum is 28.

The square root of 6551263 is about 2559.5435139884. The cubic root of 6551263 is about 187.1148883645.

The spelling of 6551263 in words is "six million, five hundred fifty-one thousand, two hundred sixty-three".