5540181 has 8 divisors (see below), whose sum is σ = 7821504. Its totient is φ = 3476160.

The previous prime is 5540179. The next prime is 5540221. The reversal of 5540181 is 1810455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5540181 - 2¹ = 5540179 is a prime.

It is a super-2 number, since 2×5540181² = 61387211025522, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5540111) 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, 54265 + ... + 54366.

It is an arithmetic number, because the mean of its divisors is an integer number (977688).

Almost surely, 2^5540181 is an apocalyptic number.

5540181 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5540181 is a deficient number, since it is larger than the sum of its proper divisors (2281323).

5540181 is a wasteful number, since it uses less digits than its factorization.

5540181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108651.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 5540181 is about 2353.7589086395. The cubic root of 5540181 is about 176.9462315534.

The spelling of 5540181 in words is "five million, five hundred forty thousand, one hundred eighty-one".