12551880 has 128 divisors (see below), whose sum is σ = 42353280. Its totient is φ = 2949120.

The previous prime is 12551873. The next prime is 12551881. The reversal of 12551880 is 8815521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551881) 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 31 ways as a sum of consecutive naturals, for example, 48712 + ... + 48968.

It is an arithmetic number, because the mean of its divisors is an integer number (330885).

Almost surely, 2^12551880 is an apocalyptic number.

12551880 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 12551880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21176640).

12551880 is an abundant number, since it is smaller than the sum of its proper divisors (29801400).

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

12551880 is a wasteful number, since it uses less digits than its factorization.

12551880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 12551880 is about 3542.8632488427. The cubic root of 12551880 is about 232.4000726782.

It can be divided in two parts, 12551 and 880, that added together give a palindrome (13431).

The spelling of 12551880 in words is "twelve million, five hundred fifty-one thousand, eight hundred eighty".