34520521 has 8 divisors (see below), whose sum is σ = 39493440. Its totient is φ = 29557968.

The previous prime is 34520491. The next prime is 34520531. The reversal of 34520521 is 12502543.

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 34520521 - 2¹⁹ = 33996233 is a prime.

It is a super-2 number, since 2×34520521² = 2383332740222882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34520492 and 34520501.

It is not an unprimeable number, because it can be changed into a prime (34520531) 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, 6855 + ... + 10771.

It is an arithmetic number, because the mean of its divisors is an integer number (4936680).

Almost surely, 2^34520521 is an apocalyptic number.

It is an amenable number.

34520521 is a deficient number, since it is larger than the sum of its proper divisors (4972919).

34520521 is a wasteful number, since it uses less digits than its factorization.

34520521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 34520521 is about 5875.4166660757. The cubic root of 34520521 is about 325.6060360700.

The spelling of 34520521 in words is "thirty-four million, five hundred twenty thousand, five hundred twenty-one".