6551351553 has 4 divisors (see below), whose sum is σ = 8735135408. Its totient is φ = 4367567700.

The previous prime is 6551351549. The next prime is 6551351629. The reversal of 6551351553 is 3551531556.

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 not a de Polignac number, because 6551351553 - 2² = 6551351549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6551371553) 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, 1091891923 + ... + 1091891928.

It is an arithmetic number, because the mean of its divisors is an integer number (2183783852).

Almost surely, 2^6551351553 is an apocalyptic number.

It is an amenable number.

6551351553 is a deficient number, since it is larger than the sum of its proper divisors (2183783855).

6551351553 is a wasteful number, since it uses less digits than its factorization.

6551351553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183783854.

The product of its digits is 168750, while the sum is 39.

The square root of 6551351553 is about 80940.4197728181. The cubic root of 6551351553 is about 1871.1573143401.

The spelling of 6551351553 in words is "six billion, five hundred fifty-one million, three hundred fifty-one thousand, five hundred fifty-three".