3421555 has 4 divisors (see below), whose sum is σ = 4105872. Its totient is φ = 2737240.

The previous prime is 3421531. The next prime is 3421567. The reversal of 3421555 is 5551243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5551243 = 139 ⋅39937.

It is not a de Polignac number, because 3421555 - 2¹³ = 3413363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342151 + ... + 342160.

It is an arithmetic number, because the mean of its divisors is an integer number (1026468).

Almost surely, 2^3421555 is an apocalyptic number.

3421555 is a deficient number, since it is larger than the sum of its proper divisors (684317).

3421555 is an equidigital number, since it uses as much as digits as its factorization.

3421555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684316.

The product of its digits is 3000, while the sum is 25.

The square root of 3421555 is about 1849.7445769619. The cubic root of 3421555 is about 150.6865565105.

Adding to 3421555 its reverse (5551243), we get a palindrome (8972798).

The spelling of 3421555 in words is "three million, four hundred twenty-one thousand, five hundred fifty-five".