8513522 has 4 divisors (see below), whose sum is σ = 12770286. Its totient is φ = 4256760.

The previous prime is 8513521. The next prime is 8513537. The reversal of 8513522 is 2253158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2253158 = 2 ⋅1126579.

It can be written as a sum of positive squares in only one way, i.e., 8473921 + 39601 = 2911^2 + 199^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8513491 and 8513500.

It is not an unprimeable number, because it can be changed into a prime (8513521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128379 + ... + 2128382.

Almost surely, 2^8513522 is an apocalyptic number.

8513522 is a deficient number, since it is larger than the sum of its proper divisors (4256764).

8513522 is a wasteful number, since it uses less digits than its factorization.

8513522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256763.

The product of its digits is 2400, while the sum is 26.

The square root of 8513522 is about 2917.7940297423. The cubic root of 8513522 is about 204.1909176432.

The spelling of 8513522 in words is "eight million, five hundred thirteen thousand, five hundred twenty-two".