12552778 has 16 divisors (see below), whose sum is σ = 21659904. Its totient is φ = 5344560.

The previous prime is 12552773. The next prime is 12552791. The reversal of 12552778 is 87725521.

It is not an unprimeable number, because it can be changed into a prime (12552773) 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, 658 + ... + 5053.

It is an arithmetic number, because the mean of its divisors is an integer number (1353744).

Almost surely, 2^12552778 is an apocalyptic number.

12552778 is a deficient number, since it is larger than the sum of its proper divisors (9107126).

12552778 is a wasteful number, since it uses less digits than its factorization.

12552778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877.

The product of its digits is 39200, while the sum is 37.

The square root of 12552778 is about 3542.9899802286. The cubic root of 12552778 is about 232.4056147507.

The spelling of 12552778 in words is "twelve million, five hundred fifty-two thousand, seven hundred seventy-eight".