12550530 has 16 divisors (see below), whose sum is σ = 30121344. Its totient is φ = 3346800.

The previous prime is 12550529. The next prime is 12550543. The reversal of 12550530 is 3505521.

It is a junction number, because it is equal to n+sod(n) for n = 12550497 and 12550506.

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 7 ways as a sum of consecutive naturals, for example, 209146 + ... + 209205.

It is an arithmetic number, because the mean of its divisors is an integer number (1882584).

Almost surely, 2^12550530 is an apocalyptic number.

12550530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12550530 is an abundant number, since it is smaller than the sum of its proper divisors (17570814).

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

12550530 is a wasteful number, since it uses less digits than its factorization.

12550530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418361.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 12550530 is about 3542.6727198543. The cubic root of 12550530 is about 232.3917405573.

The spelling of 12550530 in words is "twelve million, five hundred fifty thousand, five hundred thirty".