6551505444 has 48 divisors (see below), whose sum is σ = 17554279680. Its totient is φ = 1880814240.

The previous prime is 6551505419. The next prime is 6551505517. The reversal of 6551505444 is 4445051556.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1303614 + ... + 1308629.

It is an arithmetic number, because the mean of its divisors is an integer number (365714160).

Almost surely, 2^6551505444 is an apocalyptic number.

It is an amenable number.

6551505444 is an abundant number, since it is smaller than the sum of its proper divisors (11002774236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6551505444 is a wasteful number, since it uses less digits than its factorization.

6551505444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612280 (or 2612278 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The square root of 6551505444 is about 80941.3704109339. The cubic root of 6551505444 is about 1871.1719653636.

The spelling of 6551505444 in words is "six billion, five hundred fifty-one million, five hundred five thousand, four hundred forty-four".