34513221 has 8 divisors (see below), whose sum is σ = 46535040. Its totient is φ = 22750112.

The previous prime is 34513217. The next prime is 34513223. The reversal of 34513221 is 12231543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34513221 - 2² = 34513217 is a prime.

It is a super-3 number, since 3×34513221³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34513223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64365 + ... + 64898.

It is an arithmetic number, because the mean of its divisors is an integer number (5816880).

Almost surely, 2^34513221 is an apocalyptic number.

It is an amenable number.

34513221 is a deficient number, since it is larger than the sum of its proper divisors (12021819).

34513221 is a wasteful number, since it uses less digits than its factorization.

34513221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129355.

The product of its digits is 720, while the sum is 21.

The square root of 34513221 is about 5874.7954006927. The cubic root of 34513221 is about 325.5830826541.

Adding to 34513221 its reverse (12231543), we get a palindrome (46744764).

The spelling of 34513221 in words is "thirty-four million, five hundred thirteen thousand, two hundred twenty-one".