8121560 has 16 divisors (see below), whose sum is σ = 18273600. Its totient is φ = 3248608.

The previous prime is 8121559. The next prime is 8121577. The reversal of 8121560 is 651218.

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, 101480 + ... + 101559.

It is an arithmetic number, because the mean of its divisors is an integer number (1142100).

Almost surely, 2^8121560 is an apocalyptic number.

It is an amenable number.

8121560 is an abundant number, since it is smaller than the sum of its proper divisors (10152040).

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

8121560 is a wasteful number, since it uses less digits than its factorization.

8121560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203050 (or 203046 counting only the distinct ones).

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

The square root of 8121560 is about 2849.8350829478. The cubic root of 8121560 is about 201.0079120340.

Adding to 8121560 its reverse (651218), we get a palindrome (8772778).

The spelling of 8121560 in words is "eight million, one hundred twenty-one thousand, five hundred sixty".