5550381 has 12 divisors (see below), whose sum is σ = 8489052. Its totient is φ = 3482496.

The previous prime is 5550379. The next prime is 5550401. The reversal of 5550381 is 1830555.

It can be written as a sum of positive squares in 2 ways, for example, as 4447881 + 1102500 = 2109^2 + 1050^2 .

It is not a de Polignac number, because 5550381 - 2¹ = 5550379 is a prime.

It is a super-2 number, since 2×5550381² = 61613458490322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5550301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17986 + ... + 18291.

It is an arithmetic number, because the mean of its divisors is an integer number (707421).

Almost surely, 2^5550381 is an apocalyptic number.

5550381 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5550381 is a deficient number, since it is larger than the sum of its proper divisors (2938671).

5550381 is a wasteful number, since it uses less digits than its factorization.

5550381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36300 (or 36297 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 5550381 is about 2355.9246592368. The cubic root of 5550381 is about 177.0547565913.

The spelling of 5550381 in words is "five million, five hundred fifty thousand, three hundred eighty-one".