12551860 has 12 divisors (see below), whose sum is σ = 26358948. Its totient is φ = 5020736.

The previous prime is 12551857. The next prime is 12551873. The reversal of 12551860 is 6815521.

It can be written as a sum of positive squares in 2 ways, for example, as 1648656 + 10903204 = 1284^2 + 3302^2 .

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, 313777 + ... + 313816.

It is an arithmetic number, because the mean of its divisors is an integer number (2196579).

Almost surely, 2^12551860 is an apocalyptic number.

12551860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12551860 is an abundant number, since it is smaller than the sum of its proper divisors (13807088).

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

12551860 is a wasteful number, since it uses less digits than its factorization.

12551860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627602 (or 627600 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 12551860 is about 3542.8604262658. The cubic root of 12551860 is about 232.3999492437.

The spelling of 12551860 in words is "twelve million, five hundred fifty-one thousand, eight hundred sixty".