6553791 has 10 divisors (see below), whose sum is σ = 9790352. Its totient is φ = 4369140.

The previous prime is 6553777. The next prime is 6553793. The reversal of 6553791 is 1973556.

It is a happy number.

It is not a de Polignac number, because 6553791 - 2⁷ = 6553663 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 (6553793) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40375 + ... + 40536.

Almost surely, 2^6553791 is an apocalyptic number.

6553791 is a deficient number, since it is larger than the sum of its proper divisors (3236561).

6553791 is an equidigital number, since it uses as much as digits as its factorization.

6553791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80923 (or 80914 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 6553791 is about 2560.0373044157. The cubic root of 6553791 is about 187.1389532208.

The spelling of 6553791 in words is "six million, five hundred fifty-three thousand, seven hundred ninety-one".