5545890 has 48 divisors (see below), whose sum is σ = 16481088. Its totient is φ = 1267488.

The previous prime is 5545889. The next prime is 5545901. The reversal of 5545890 is 985455.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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, 3772 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (343356).

Almost surely, 2^5545890 is an apocalyptic number.

5545890 is an abundant number, since it is smaller than the sum of its proper divisors (10935198).

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

5545890 is a wasteful number, since it uses less digits than its factorization.

5545890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823 (or 8820 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 5545890 is about 2354.9713374052. The cubic root of 5545890 is about 177.0069900524.

It can be divided in two parts, 55458 and 90, that multiplied together give a triangular number (4991220 = T₃₁₅₉).

The spelling of 5545890 in words is "five million, five hundred forty-five thousand, eight hundred ninety".