3557213 has 4 divisors (see below), whose sum is σ = 3880608. Its totient is φ = 3233820.

The previous prime is 3557207. The next prime is 3557243. The reversal of 3557213 is 3127553.

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 3557213 - 2¹² = 3553117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3557243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161681 + ... + 161702.

It is an arithmetic number, because the mean of its divisors is an integer number (970152).

Almost surely, 2^3557213 is an apocalyptic number.

It is an amenable number.

3557213 is a deficient number, since it is larger than the sum of its proper divisors (323395).

3557213 is a wasteful number, since it uses less digits than its factorization.

3557213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323394.

The product of its digits is 3150, while the sum is 26.

The square root of 3557213 is about 1886.0575282849. The cubic root of 3557213 is about 152.6522782428.

The spelling of 3557213 in words is "three million, five hundred fifty-seven thousand, two hundred thirteen".