8997555 has 16 divisors (see below), whose sum is σ = 16452864. Its totient is φ = 4113120.

The previous prime is 8997553. The next prime is 8997587. The reversal of 8997555 is 5557998.

It is not a de Polignac number, because 8997555 - 2¹ = 8997553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8997551) 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 15 ways as a sum of consecutive naturals, for example, 42741 + ... + 42950.

It is an arithmetic number, because the mean of its divisors is an integer number (1028304).

Almost surely, 2^8997555 is an apocalyptic number.

8997555 is a deficient number, since it is larger than the sum of its proper divisors (7455309).

8997555 is a wasteful number, since it uses less digits than its factorization.

8997555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85706.

The product of its digits is 567000, while the sum is 48.

The square root of 8997555 is about 2999.5924723202. The cubic root of 8997555 is about 207.9895442846.

The spelling of 8997555 in words is "eight million, nine hundred ninety-seven thousand, five hundred fifty-five".