8557522 has 4 divisors (see below), whose sum is σ = 12836286. Its totient is φ = 4278760.

The previous prime is 8557489. The next prime is 8557529. The reversal of 8557522 is 2257558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2257558 = 2 ⋅1128779.

It can be written as a sum of positive squares in only one way, i.e., 8532241 + 25281 = 2921^2 + 159^2 .

It is not an unprimeable number, because it can be changed into a prime (8557529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139379 + ... + 2139382.

Almost surely, 2^8557522 is an apocalyptic number.

8557522 is a deficient number, since it is larger than the sum of its proper divisors (4278764).

8557522 is a wasteful number, since it uses less digits than its factorization.

8557522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278763.

The product of its digits is 28000, while the sum is 34.

The square root of 8557522 is about 2925.3242555313. The cubic root of 8557522 is about 204.5420831887.

The spelling of 8557522 in words is "eight million, five hundred fifty-seven thousand, five hundred twenty-two".