3813557 has 6 divisors (see below), whose sum is σ = 4191894. Its totient is φ = 3466760.

The previous prime is 3813539. The next prime is 3813571. The reversal of 3813557 is 7553183.

3813557 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 only one way, i.e., 2579236 + 1234321 = 1606^2 + 1111^2 .

It is not a de Polignac number, because 3813557 - 2⁶ = 3813493 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 (3813517) 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 5 ways as a sum of consecutive naturals, for example, 15638 + ... + 15879.

It is an arithmetic number, because the mean of its divisors is an integer number (698649).

Almost surely, 2^3813557 is an apocalyptic number.

It is an amenable number.

3813557 is a deficient number, since it is larger than the sum of its proper divisors (378337).

3813557 is a wasteful number, since it uses less digits than its factorization.

3813557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31539 (or 31528 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The square root of 3813557 is about 1952.8330701829. The cubic root of 3813557 is about 156.2344300219.

The spelling of 3813557 in words is "three million, eight hundred thirteen thousand, five hundred fifty-seven".