12551730 has 16 divisors (see below), whose sum is σ = 30124224. Its totient is φ = 3347120.

The previous prime is 12551711. The next prime is 12551731. The reversal of 12551730 is 3715521.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12551730.

It is not an unprimeable number, because it can be changed into a prime (12551731) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 209166 + ... + 209225.

It is an arithmetic number, because the mean of its divisors is an integer number (1882764).

Almost surely, 2^12551730 is an apocalyptic number.

12551730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12551730 is an abundant number, since it is smaller than the sum of its proper divisors (17572494).

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

12551730 is a wasteful number, since it uses less digits than its factorization.

12551730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418401.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 12551730 is about 3542.8420794611. The cubic root of 12551730 is about 232.3991469165.

The spelling of 12551730 in words is "twelve million, five hundred fifty-one thousand, seven hundred thirty".