3553861 has 4 divisors (see below), whose sum is σ = 3560032. Its totient is φ = 3547692.

The previous prime is 3553853. The next prime is 3553877. The reversal of 3553861 is 1683553.

3553861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3553861 - 2³ = 3553853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3553061) 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 3 ways as a sum of consecutive naturals, for example, 2121 + ... + 3406.

It is an arithmetic number, because the mean of its divisors is an integer number (890008).

Almost surely, 2^3553861 is an apocalyptic number.

It is an amenable number.

3553861 is a deficient number, since it is larger than the sum of its proper divisors (6171).

3553861 is an equidigital number, since it uses as much as digits as its factorization.

3553861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170.

The product of its digits is 10800, while the sum is 31.

The square root of 3553861 is about 1885.1686927169. The cubic root of 3553861 is about 152.6043145472.

The spelling of 3553861 in words is "three million, five hundred fifty-three thousand, eight hundred sixty-one".