8556497 has 4 divisors (see below), whose sum is σ = 8564976. Its totient is φ = 8548020.

The previous prime is 8556487. The next prime is 8556511. The reversal of 8556497 is 7946558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7946558 = 2 ⋅3973279.

It is a cyclic number.

It is not a de Polignac number, because 8556497 - 2⁸ = 8556241 is a prime.

It is a super-2 number, since 2×8556497² = 146427281822018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8556487) 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 3 ways as a sum of consecutive naturals, for example, 2483 + ... + 4824.

It is an arithmetic number, because the mean of its divisors is an integer number (2141244).

Almost surely, 2^8556497 is an apocalyptic number.

It is an amenable number.

8556497 is a deficient number, since it is larger than the sum of its proper divisors (8479).

8556497 is a wasteful number, since it uses less digits than its factorization.

8556497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478.

The product of its digits is 302400, while the sum is 44.

The square root of 8556497 is about 2925.1490560312. The cubic root of 8556497 is about 204.5339163383.

The spelling of 8556497 in words is "eight million, five hundred fifty-six thousand, four hundred ninety-seven".