30134521 has 4 divisors (see below), whose sum is σ = 30221712. Its totient is φ = 30047332.

The previous prime is 30134497. The next prime is 30134537. The reversal of 30134521 is 12543103.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30134521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30164521) 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, 43075 + ... + 43768.

It is an arithmetic number, because the mean of its divisors is an integer number (7555428).

Almost surely, 2^30134521 is an apocalyptic number.

It is an amenable number.

30134521 is a deficient number, since it is larger than the sum of its proper divisors (87191).

30134521 is an equidigital number, since it uses as much as digits as its factorization.

30134521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87190.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30134521 is about 5489.4918708383. The cubic root of 30134521 is about 311.1869892823.

Adding to 30134521 its reverse (12543103), we get a palindrome (42677624).

The spelling of 30134521 in words is "thirty million, one hundred thirty-four thousand, five hundred twenty-one".