3521145 has 8 divisors (see below), whose sum is σ = 5633856. Its totient is φ = 1877936.

The previous prime is 3521143. The next prime is 3521153. The reversal of 3521145 is 5411253.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3521145 - 2¹ = 3521143 is a prime.

It is a super-2 number, since 2×3521145² = 24796924222050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3521143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117357 + ... + 117386.

It is an arithmetic number, because the mean of its divisors is an integer number (704232).

Almost surely, 2^3521145 is an apocalyptic number.

It is an amenable number.

3521145 is a deficient number, since it is larger than the sum of its proper divisors (2112711).

3521145 is a wasteful number, since it uses less digits than its factorization.

3521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234751.

The product of its digits is 600, while the sum is 21.

The square root of 3521145 is about 1876.4714226441. The cubic root of 3521145 is about 152.1345905082.

Adding to 3521145 its reverse (5411253), we get a palindrome (8932398).

The spelling of 3521145 in words is "three million, five hundred twenty-one thousand, one hundred forty-five".