34221251 has 2 divisors, whose sum is σ = 34221252. Its totient is φ = 34221250.

The previous prime is 34221203. The next prime is 34221287. The reversal of 34221251 is 15212243.

It is a strong prime.

It is an emirp because it is prime and its reverse (15212243) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34221251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34221751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17110625 + 17110626.

It is an arithmetic number, because the mean of its divisors is an integer number (17110626).

Almost surely, 2^34221251 is an apocalyptic number.

34221251 is a deficient number, since it is larger than the sum of its proper divisors (1).

34221251 is an equidigital number, since it uses as much as digits as its factorization.

34221251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 20.

The square root of 34221251 is about 5849.8932468892. The cubic root of 34221251 is about 324.6623744291.

Adding to 34221251 its reverse (15212243), we get a palindrome (49433494).

The spelling of 34221251 in words is "thirty-four million, two hundred twenty-one thousand, two hundred fifty-one".