12551040 has 96 divisors (see below), whose sum is σ = 43360200. Its totient is φ = 3345408.

The previous prime is 12551017. The next prime is 12551053. The reversal of 12551040 is 4015521.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4671 + ... + 6849.

Almost surely, 2^12551040 is an apocalyptic number.

12551040 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 12551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21680100).

12551040 is an abundant number, since it is smaller than the sum of its proper divisors (30809160).

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

12551040 is a wasteful number, since it uses less digits than its factorization.

12551040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12551040 is about 3542.7446986764. The cubic root of 12551040 is about 232.3948883176.

Adding to 12551040 its reverse (4015521), we get a palindrome (16566561).

The spelling of 12551040 in words is "twelve million, five hundred fifty-one thousand, forty".