3521427 has 16 divisors (see below), whose sum is σ = 5779200. Its totient is φ = 1857312.

The previous prime is 3521417. The next prime is 3521437. The reversal of 3521427 is 7241253.

It is an interprime number because it is at equal distance from previous prime (3521417) and next prime (3521437).

It is not a de Polignac number, because 3521427 - 2⁷ = 3521299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3521397 and 3521406.

It is not an unprimeable number, because it can be changed into a prime (3521417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6177 + ... + 6722.

It is an arithmetic number, because the mean of its divisors is an integer number (361200).

Almost surely, 2^3521427 is an apocalyptic number.

3521427 is a deficient number, since it is larger than the sum of its proper divisors (2257773).

3521427 is a wasteful number, since it uses less digits than its factorization.

3521427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12922.

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

The square root of 3521427 is about 1876.5465621721. The cubic root of 3521427 is about 152.1386517637.

The spelling of 3521427 in words is "three million, five hundred twenty-one thousand, four hundred twenty-seven".