12457550 has 24 divisors (see below), whose sum is σ = 26481936. Its totient is φ = 4271040.

The previous prime is 12457537. The next prime is 12457579. The reversal of 12457550 is 5575421.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17447 + ... + 18146.

It is an arithmetic number, because the mean of its divisors is an integer number (1103414).

Almost surely, 2^12457550 is an apocalyptic number.

12457550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12457550 is an abundant number, since it is smaller than the sum of its proper divisors (14024386).

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

12457550 is a wasteful number, since it uses less digits than its factorization.

12457550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35612 (or 35607 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 12457550 is about 3529.5254638549. The cubic root of 12457550 is about 231.8164297981.

The spelling of 12457550 in words is "twelve million, four hundred fifty-seven thousand, five hundred fifty".