5550891 has 16 divisors (see below), whose sum is σ = 8091648. Its totient is φ = 3369600.

The previous prime is 5550877. The next prime is 5550917. The reversal of 5550891 is 1980555.

5550891 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5550891 - 2⁷ = 5550763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5550821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175 + ... + 3336.

It is an arithmetic number, because the mean of its divisors is an integer number (505728).

Almost surely, 2^5550891 is an apocalyptic number.

5550891 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5550891 is a deficient number, since it is larger than the sum of its proper divisors (2540757).

5550891 is a wasteful number, since it uses less digits than its factorization.

5550891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562.

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 5550891 is about 2356.0328945072. The cubic root of 5550891 is about 177.0601793518.

It can be divided in two parts, 5550 and 891, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 5550891 in words is "five million, five hundred fifty thousand, eight hundred ninety-one".