3521007 has 12 divisors (see below), whose sum is σ = 5812560. Its totient is φ = 2011968.

The previous prime is 3520999. The next prime is 3521029. The reversal of 3521007 is 7001253.

It is not a de Polignac number, because 3521007 - 2³ = 3520999 is a prime.

It is a super-3 number, since 3×3521007³ (a number of 21 digits) contains 333 as substring.

3521007 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27882 + ... + 28007.

It is an arithmetic number, because the mean of its divisors is an integer number (484380).

Almost surely, 2^3521007 is an apocalyptic number.

3521007 is a deficient number, since it is larger than the sum of its proper divisors (2291553).

3521007 is a wasteful number, since it uses less digits than its factorization.

3521007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55902 (or 55899 counting only the distinct ones).

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

The square root of 3521007 is about 1876.4346511403. The cubic root of 3521007 is about 152.1326030062.

The spelling of 3521007 in words is "three million, five hundred twenty-one thousand, seven".