3451521 has 12 divisors (see below), whose sum is σ = 4858512. Its totient is φ = 2179224.

The previous prime is 3451517. The next prime is 3451537. The reversal of 3451521 is 1251543.

It is not a de Polignac number, because 3451521 - 2² = 3451517 is a prime.

3451521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3451321) 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, 511 + ... + 2676.

It is an arithmetic number, because the mean of its divisors is an integer number (404876).

Almost surely, 2^3451521 is an apocalyptic number.

It is an amenable number.

3451521 is a deficient number, since it is larger than the sum of its proper divisors (1406991).

3451521 is a wasteful number, since it uses less digits than its factorization.

3451521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228 (or 3209 counting only the distinct ones).

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

The square root of 3451521 is about 1857.8269564198. The cubic root of 3451521 is about 151.1251830938.

It can be divided in two parts, 3451 and 521, that multiplied together give a palindrome (1797971).

The spelling of 3451521 in words is "three million, four hundred fifty-one thousand, five hundred twenty-one".