3553381 has 8 divisors (see below), whose sum is σ = 3853304. Its totient is φ = 3257280.

The previous prime is 3553351. The next prime is 3553409. The reversal of 3553381 is 1833553.

3553381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 280900 + 3272481 = 530^2 + 1809^2 .

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

It is not a de Polignac number, because 3553381 - 2⁹ = 3552869 is a prime.

It is a super-2 number, since 2×3553381² = 25253033062322, which contains 22 as substring.

3553381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3553321) 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 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (481663).

Almost surely, 2^3553381 is an apocalyptic number.

It is an amenable number.

3553381 is a deficient number, since it is larger than the sum of its proper divisors (299923).

3553381 is a wasteful number, since it uses less digits than its factorization.

3553381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911.

The product of its digits is 5400, while the sum is 28.

The square root of 3553381 is about 1885.0413788562. The cubic root of 3553381 is about 152.5974437693.

The spelling of 3553381 in words is "three million, five hundred fifty-three thousand, three hundred eighty-one".