34158221 has 4 divisors (see below), whose sum is σ = 34250172. Its totient is φ = 34066272.

The previous prime is 34158193. The next prime is 34158239. The reversal of 34158221 is 12285143.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9853321 + 24304900 = 3139^2 + 4930^2 .

It is a cyclic number.

It is not a de Polignac number, because 34158221 - 2¹⁰ = 34157197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34158251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45416 + ... + 46161.

It is an arithmetic number, because the mean of its divisors is an integer number (8562543).

Almost surely, 2^34158221 is an apocalyptic number.

It is an amenable number.

34158221 is a deficient number, since it is larger than the sum of its proper divisors (91951).

34158221 is an equidigital number, since it uses as much as digits as its factorization.

34158221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91950.

The product of its digits is 1920, while the sum is 26.

The square root of 34158221 is about 5844.5034861826. The cubic root of 34158221 is about 324.4629267643.

The spelling of 34158221 in words is "thirty-four million, one hundred fifty-eight thousand, two hundred twenty-one".