5551561448 has 32 divisors (see below), whose sum is σ = 10486254600. Its totient is φ = 2755264512.

The previous prime is 5551561441. The next prime is 5551561469. The reversal of 5551561448 is 8441651555.

It can be written as a sum of positive squares in 4 ways, for example, as 4454494564 + 1097066884 = 66742^2 + 33122^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5551561399 and 5551561408.

It is not an unprimeable number, because it can be changed into a prime (5551561441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768136 + ... + 1771272.

Almost surely, 2^5551561448 is an apocalyptic number.

It is an amenable number.

5551561448 is a deficient number, since it is larger than the sum of its proper divisors (4934693152).

5551561448 is a wasteful number, since it uses less digits than its factorization.

5551561448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709 (or 4705 counting only the distinct ones).

The product of its digits is 480000, while the sum is 44.

The square root of 5551561448 is about 74508.8011445628. The cubic root of 5551561448 is about 1770.6730762868.

The spelling of 5551561448 in words is "five billion, five hundred fifty-one million, five hundred sixty-one thousand, four hundred forty-eight".