8561120 has 24 divisors (see below), whose sum is σ = 20226024. Its totient is φ = 3424384.

The previous prime is 8561117. The next prime is 8561131. The reversal of 8561120 is 211658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26594 + ... + 26913.

It is an arithmetic number, because the mean of its divisors is an integer number (842751).

Almost surely, 2^8561120 is an apocalyptic number.

8561120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8561120 is an abundant number, since it is smaller than the sum of its proper divisors (11664904).

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

8561120 is a wasteful number, since it uses less digits than its factorization.

8561120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53522 (or 53514 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 8561120 is about 2925.9391654647. The cubic root of 8561120 is about 204.5707456644.

Adding to 8561120 its reverse (211658), we get a palindrome (8772778).

The spelling of 8561120 in words is "eight million, five hundred sixty-one thousand, one hundred twenty".