3421005251 has 4 divisors (see below), whose sum is σ = 3622240872. Its totient is φ = 3219769632.

The previous prime is 3421005241. The next prime is 3421005293. The reversal of 3421005251 is 1525001243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3421005251 - 2¹⁴ = 3420988867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3421005241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100617785 + ... + 100617818.

It is an arithmetic number, because the mean of its divisors is an integer number (905560218).

Almost surely, 2^3421005251 is an apocalyptic number.

3421005251 is a deficient number, since it is larger than the sum of its proper divisors (201235621).

3421005251 is a wasteful number, since it uses less digits than its factorization.

3421005251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201235620.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 3421005251 is about 58489.3601520824. The cubic root of 3421005251 is about 1506.7848569462.

Adding to 3421005251 its reverse (1525001243), we get a palindrome (4946006494).

The spelling of 3421005251 in words is "three billion, four hundred twenty-one million, five thousand, two hundred fifty-one".