8119521 has 20 divisors (see below), whose sum is σ = 12342000. Its totient is φ = 5318136.

The previous prime is 8119499. The next prime is 8119537. The reversal of 8119521 is 1259118.

It is not a de Polignac number, because 8119521 - 2⁹ = 8119009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8119721) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3930 + ... + 5628.

It is an arithmetic number, because the mean of its divisors is an integer number (617100).

Almost surely, 2^8119521 is an apocalyptic number.

8119521 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8119521 is a deficient number, since it is larger than the sum of its proper divisors (4222479).

8119521 is a wasteful number, since it uses less digits than its factorization.

8119521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770 (or 1761 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 8119521 is about 2849.4773204923. The cubic root of 8119521 is about 200.9910889344.

The spelling of 8119521 in words is "eight million, one hundred nineteen thousand, five hundred twenty-one".