8149521 has 16 divisors (see below), whose sum is σ = 11483136. Its totient is φ = 5130576.

The previous prime is 8149517. The next prime is 8149543. The reversal of 8149521 is 1259418.

It is a happy number.

It is not a de Polignac number, because 8149521 - 2² = 8149517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8149571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5016 + ... + 6438.

It is an arithmetic number, because the mean of its divisors is an integer number (717696).

Almost surely, 2^8149521 is an apocalyptic number.

It is an amenable number.

8149521 is a deficient number, since it is larger than the sum of its proper divisors (3333615).

8149521 is a wasteful number, since it uses less digits than its factorization.

8149521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532.

The product of its digits is 2880, while the sum is 30.

The square root of 8149521 is about 2854.7365903004. The cubic root of 8149521 is about 201.2383252618.

The spelling of 8149521 in words is "eight million, one hundred forty-nine thousand, five hundred twenty-one".