12785550 has 24 divisors (see below), whose sum is σ = 31708536. Its totient is φ = 3409440.

The previous prime is 12785527. The next prime is 12785579. The reversal of 12785550 is 5558721.

It is a happy number.

12785550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42469 + ... + 42768.

It is an arithmetic number, because the mean of its divisors is an integer number (1321189).

Almost surely, 2^12785550 is an apocalyptic number.

12785550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12785550 is an abundant number, since it is smaller than the sum of its proper divisors (18922986).

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

12785550 is a wasteful number, since it uses less digits than its factorization.

12785550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85252 (or 85247 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 12785550 is about 3575.6887448434. The cubic root of 12785550 is about 233.8333607949.

The spelling of 12785550 in words is "twelve million, seven hundred eighty-five thousand, five hundred fifty".