3527421 has 4 divisors (see below), whose sum is σ = 4703232. Its totient is φ = 2351612.

The previous prime is 3527411. The next prime is 3527443. The reversal of 3527421 is 1247253.

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 3527421 - 2⁹ = 3526909 is a prime.

It is a super-2 number, since 2×3527421² = 24885397822482, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3527391 and 3527400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3527411) 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, 587901 + ... + 587906.

It is an arithmetic number, because the mean of its divisors is an integer number (1175808).

Almost surely, 2^3527421 is an apocalyptic number.

It is an amenable number.

3527421 is a deficient number, since it is larger than the sum of its proper divisors (1175811).

3527421 is a wasteful number, since it uses less digits than its factorization.

3527421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175810.

The product of its digits is 1680, while the sum is 24.

The square root of 3527421 is about 1878.1429658043. The cubic root of 3527421 is about 152.2249238119.

The spelling of 3527421 in words is "three million, five hundred twenty-seven thousand, four hundred twenty-one".