34457221 has 4 divisors (see below), whose sum is σ = 34501792. Its totient is φ = 34412652.

The previous prime is 34457219. The next prime is 34457237. The reversal of 34457221 is 12275443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12275443 = 419 ⋅29297.

It is a cyclic number.

It is not a de Polignac number, because 34457221 - 2¹ = 34457219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34457221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34457821) 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, 21105 + ... + 22678.

It is an arithmetic number, because the mean of its divisors is an integer number (8625448).

Almost surely, 2^34457221 is an apocalyptic number.

It is an amenable number.

34457221 is a deficient number, since it is larger than the sum of its proper divisors (44571).

34457221 is an equidigital number, since it uses as much as digits as its factorization.

34457221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44570.

The product of its digits is 6720, while the sum is 28.

The square root of 34457221 is about 5870.0273423554. The cubic root of 34457221 is about 325.4068939141.

The spelling of 34457221 in words is "thirty-four million, four hundred fifty-seven thousand, two hundred twenty-one".