12051564 has 48 divisors (see below), whose sum is σ = 32755968. Its totient is φ = 3377088.

The previous prime is 12051553. The next prime is 12051577. The reversal of 12051564 is 46515021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3099 + ... + 5805.

It is an arithmetic number, because the mean of its divisors is an integer number (682416).

Almost surely, 2^12051564 is an apocalyptic number.

12051564 is a gapful number since it is divisible by the number (14) 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 12051564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16377984).

12051564 is an abundant number, since it is smaller than the sum of its proper divisors (20704404).

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

12051564 is a wasteful number, since it uses less digits than its factorization.

12051564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774 (or 2772 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 12051564 is about 3471.5362593526. The cubic root of 12051564 is about 229.2703024078.

Adding to 12051564 its reverse (46515021), we get a palindrome (58566585).

The spelling of 12051564 in words is "twelve million, fifty-one thousand, five hundred sixty-four".