5491890 has 48 divisors (see below), whose sum is σ = 14414400. Its totient is φ = 1450656.

The previous prime is 5491883. The next prime is 5491907. The reversal of 5491890 is 981945.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12291 + ... + 12729.

It is an arithmetic number, because the mean of its divisors is an integer number (300300).

Almost surely, 2^5491890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5491890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7207200).

5491890 is an abundant number, since it is smaller than the sum of its proper divisors (8922510).

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

5491890 is a wasteful number, since it uses less digits than its factorization.

5491890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 5491890 is about 2343.4781842381. The cubic root of 5491890 is about 176.4306131021.

The spelling of 5491890 in words is "five million, four hundred ninety-one thousand, eight hundred ninety".