12511560 has 64 divisors (see below), whose sum is σ = 38465280. Its totient is φ = 3253760.

The previous prime is 12511553. The next prime is 12511561. The reversal of 12511560 is 6511521.

It is not an unprimeable number, because it can be changed into a prime (12511561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3649 + ... + 6191.

It is an arithmetic number, because the mean of its divisors is an integer number (601020).

Almost surely, 2^12511560 is an apocalyptic number.

12511560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12511560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19232640).

12511560 is an abundant number, since it is smaller than the sum of its proper divisors (25953720).

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

12511560 is a wasteful number, since it uses less digits than its factorization.

12511560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598 (or 2594 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 12511560 is about 3537.1683590126. The cubic root of 12511560 is about 232.1509619937.

The spelling of 12511560 in words is "twelve million, five hundred eleven thousand, five hundred sixty".