3551943 has 4 divisors (see below), whose sum is σ = 4735928. Its totient is φ = 2367960.

The previous prime is 3551941. The next prime is 3551957. The reversal of 3551943 is 3491553.

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

It is not a de Polignac number, because 3551943 - 2¹ = 3551941 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3551943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591988 + ... + 591993.

It is an arithmetic number, because the mean of its divisors is an integer number (1183982).

Almost surely, 2^3551943 is an apocalyptic number.

3551943 is a deficient number, since it is larger than the sum of its proper divisors (1183985).

3551943 is a wasteful number, since it uses less digits than its factorization.

3551943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183984.

The product of its digits is 8100, while the sum is 30.

The square root of 3551943 is about 1884.6599162714. The cubic root of 3551943 is about 152.5768563596.

The spelling of 3551943 in words is "three million, five hundred fifty-one thousand, nine hundred forty-three".