8552509 has 12 divisors (see below), whose sum is σ = 9997344. Its totient is φ = 7295064.

The previous prime is 8552503. The next prime is 8552519. The reversal of 8552509 is 9052558.

It is not a de Polignac number, because 8552509 - 2³ = 8552501 is a prime.

8552509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8552501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16752 + ... + 17254.

It is an arithmetic number, because the mean of its divisors is an integer number (833112).

Almost surely, 2^8552509 is an apocalyptic number.

It is an amenable number.

8552509 is a deficient number, since it is larger than the sum of its proper divisors (1444835).

8552509 is a wasteful number, since it uses less digits than its factorization.

8552509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 8552509 is about 2924.4673019201. The cubic root of 8552509 is about 204.5021351076.

It can be divided in two parts, 855 and 2509, that added together give a square (3364 = 58²).

The spelling of 8552509 in words is "eight million, five hundred fifty-two thousand, five hundred nine".