34512521 has 4 divisors (see below), whose sum is σ = 34550292. Its totient is φ = 34474752.

The previous prime is 34512497. The next prime is 34512539. The reversal of 34512521 is 12521543.

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 1000000 + 33512521 = 1000^2 + 5789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34512521 is a prime.

It is a super-2 number, since 2×34512521² = 2382228211550882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34512551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17480 + ... + 19353.

It is an arithmetic number, because the mean of its divisors is an integer number (8637573).

Almost surely, 2^34512521 is an apocalyptic number.

It is an amenable number.

34512521 is a deficient number, since it is larger than the sum of its proper divisors (37771).

34512521 is an equidigital number, since it uses as much as digits as its factorization.

34512521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37770.

The product of its digits is 1200, while the sum is 23.

The square root of 34512521 is about 5874.7358238477. The cubic root of 34512521 is about 325.5808814715.

The spelling of 34512521 in words is "thirty-four million, five hundred twelve thousand, five hundred twenty-one".