12551020 has 24 divisors (see below), whose sum is σ = 27745200. Its totient is φ = 4756032.

The previous prime is 12551017. The next prime is 12551053. The reversal of 12551020 is 2015521.

It is a junction number, because it is equal to n+sod(n) for n = 12550985 and 12551003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16135 + ... + 16894.

It is an arithmetic number, because the mean of its divisors is an integer number (1156050).

Almost surely, 2^12551020 is an apocalyptic number.

12551020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12551020 is an abundant number, since it is smaller than the sum of its proper divisors (15194180).

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

12551020 is a wasteful number, since it uses less digits than its factorization.

12551020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33057 (or 33055 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 12551020 is about 3542.7418760051. The cubic root of 12551020 is about 232.3947648776.

Adding to 12551020 its reverse (2015521), we get a palindrome (14566541).

The spelling of 12551020 in words is "twelve million, five hundred fifty-one thousand, twenty".