8557000 has 64 divisors (see below), whose sum is σ = 20592000. Its totient is φ = 3326400.

The previous prime is 8556959. The next prime is 8557007. The reversal of 8557000 is 7558.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (8557007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42901 + ... + 43099.

It is an arithmetic number, because the mean of its divisors is an integer number (321750).

Almost surely, 2^8557000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8557000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10296000).

8557000 is an abundant number, since it is smaller than the sum of its proper divisors (12035000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8557000 is a wasteful number, since it uses less digits than its factorization.

8557000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 8557000 is about 2925.2350332922. The cubic root of 8557000 is about 204.5379241523.

The spelling of 8557000 in words is "eight million, five hundred fifty-seven thousand".