5551578 has 24 divisors (see below), whose sum is σ = 12475008. Its totient is φ = 1850364.

The previous prime is 5551531. The next prime is 5551583. The reversal of 5551578 is 8751555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5226 + ... + 6197.

It is an arithmetic number, because the mean of its divisors is an integer number (519792).

Almost surely, 2^5551578 is an apocalyptic number.

5551578 is an abundant number, since it is smaller than the sum of its proper divisors (6923430).

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

5551578 is a wasteful number, since it uses less digits than its factorization.

5551578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11440 (or 11428 counting only the distinct ones).

The product of its digits is 35000, while the sum is 36.

The square root of 5551578 is about 2356.1786859235. The cubic root of 5551578 is about 177.0674836041.

The spelling of 5551578 in words is "five million, five hundred fifty-one thousand, five hundred seventy-eight".