3421551 has 16 divisors (see below), whose sum is σ = 5301248. Its totient is φ = 1922400.

The previous prime is 3421531. The next prime is 3421567. The reversal of 3421551 is 1551243.

It is not a de Polignac number, because 3421551 - 2⁷ = 3421423 is a prime.

It is a super-2 number, since 2×3421551² = 23414022491202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421531) 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 15 ways as a sum of consecutive naturals, for example, 55 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (331328).

Almost surely, 2^3421551 is an apocalyptic number.

3421551 is a deficient number, since it is larger than the sum of its proper divisors (1879697).

3421551 is a wasteful number, since it uses less digits than its factorization.

3421551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742.

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

The square root of 3421551 is about 1849.7434957312. The cubic root of 3421551 is about 150.6864977899.

Adding to 3421551 its reverse (1551243), we get a palindrome (4972794).

The spelling of 3421551 in words is "three million, four hundred twenty-one thousand, five hundred fifty-one".