3401521 has 8 divisors (see below), whose sum is σ = 3522600. Its totient is φ = 3282048.

The previous prime is 3401509. The next prime is 3401549. The reversal of 3401521 is 1251043.

It can be written as a sum of positive squares in 4 ways, for example, as 30625 + 3370896 = 175^2 + 1836^2 .

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

It is not a de Polignac number, because 3401521 - 2⁷ = 3401393 is a prime.

It is a super-2 number, since 2×3401521² = 23140690226882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3401495 and 3401504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3401501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5205 + ... + 5821.

It is an arithmetic number, because the mean of its divisors is an integer number (440325).

Almost surely, 2^3401521 is an apocalyptic number.

It is an amenable number.

3401521 is a deficient number, since it is larger than the sum of its proper divisors (121079).

3401521 is a wasteful number, since it uses less digits than its factorization.

3401521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3401521 is about 1844.3212843754. The cubic root of 3401521 is about 150.3918790177.

Adding to 3401521 its reverse (1251043), we get a palindrome (4652564).

The spelling of 3401521 in words is "three million, four hundred one thousand, five hundred twenty-one".