8131522 has 16 divisors (see below), whose sum is σ = 14149440. Its totient is φ = 3432528.

The previous prime is 8131511. The next prime is 8131523. The reversal of 8131522 is 2251318.

It is a super-2 number, since 2×8131522² = 132243300072968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8131493 and 8131502.

It is not an unprimeable number, because it can be changed into a prime (8131523) 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 7 ways as a sum of consecutive naturals, for example, 3397 + ... + 5272.

It is an arithmetic number, because the mean of its divisors is an integer number (884340).

Almost surely, 2^8131522 is an apocalyptic number.

8131522 is a deficient number, since it is larger than the sum of its proper divisors (6017918).

8131522 is a wasteful number, since it uses less digits than its factorization.

8131522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8745.

The product of its digits is 480, while the sum is 22.

The square root of 8131522 is about 2851.5823677390. The cubic root of 8131522 is about 201.0900646679.

The spelling of 8131522 in words is "eight million, one hundred thirty-one thousand, five hundred twenty-two".