3507021 has 12 divisors (see below), whose sum is σ = 5789472. Its totient is φ = 2003976.

The previous prime is 3506989. The next prime is 3507029. The reversal of 3507021 is 1207053.

3507021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3507021 - 2⁵ = 3506989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3506985 and 3507003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3507029) 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 11 ways as a sum of consecutive naturals, for example, 27771 + ... + 27896.

It is an arithmetic number, because the mean of its divisors is an integer number (482456).

Almost surely, 2^3507021 is an apocalyptic number.

It is an amenable number.

3507021 is a deficient number, since it is larger than the sum of its proper divisors (2282451).

3507021 is a wasteful number, since it uses less digits than its factorization.

3507021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55680 (or 55677 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 3507021 is about 1872.7041944739. The cubic root of 3507021 is about 151.9309040754.

Subtracting from 3507021 its reverse (1207053), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 350702 and 1, that added together give a triangular number (350703 = T₈₃₇).

The spelling of 3507021 in words is "three million, five hundred seven thousand, twenty-one".