3012521 has 4 divisors (see below), whose sum is σ = 3057552. Its totient is φ = 2967492.

The previous prime is 3012511. The next prime is 3012523. The reversal of 3012521 is 1252103.

It is a happy number.

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-3012521 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3012496 and 3012505.

It is not an unprimeable number, because it can be changed into a prime (3012523) 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, 22415 + ... + 22548.

It is an arithmetic number, because the mean of its divisors is an integer number (764388).

Almost surely, 2^3012521 is an apocalyptic number.

It is an amenable number.

3012521 is a deficient number, since it is larger than the sum of its proper divisors (45031).

3012521 is an equidigital number, since it uses as much as digits as its factorization.

3012521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45030.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 3012521 is about 1735.6615453481. The cubic root of 3012521 is about 144.4253274941.

Adding to 3012521 its reverse (1252103), we get a palindrome (4264624).

The spelling of 3012521 in words is "three million, twelve thousand, five hundred twenty-one".