3573421 has 4 divisors (see below), whose sum is σ = 3582144. Its totient is φ = 3564700.

The previous prime is 3573413. The next prime is 3573431. The reversal of 3573421 is 1243753.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1243753 = 7 ⋅177679.

It is a cyclic number.

It is not a de Polignac number, because 3573421 - 2³ = 3573413 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 (3573431) 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, 3715 + ... + 4576.

It is an arithmetic number, because the mean of its divisors is an integer number (895536).

Almost surely, 2^3573421 is an apocalyptic number.

It is an amenable number.

3573421 is a deficient number, since it is larger than the sum of its proper divisors (8723).

3573421 is an equidigital number, since it uses as much as digits as its factorization.

3573421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722.

The product of its digits is 2520, while the sum is 25.

The square root of 3573421 is about 1890.3494385959. The cubic root of 3573421 is about 152.8837740639.

The spelling of 3573421 in words is "three million, five hundred seventy-three thousand, four hundred twenty-one".