3555406 has 4 divisors (see below), whose sum is σ = 5333112. Its totient is φ = 1777702.

The previous prime is 3555403. The next prime is 3555427. The reversal of 3555406 is 6045553.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 888850 + ... + 888853.

It is an arithmetic number, because the mean of its divisors is an integer number (1333278).

Almost surely, 2^3555406 is an apocalyptic number.

3555406 is a deficient number, since it is larger than the sum of its proper divisors (1777706).

3555406 is a wasteful number, since it uses less digits than its factorization.

3555406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777705.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 3555406 is about 1885.5784258418. The cubic root of 3555406 is about 152.6264256641.

The spelling of 3555406 in words is "three million, five hundred fifty-five thousand, four hundred six".