12155050 has 12 divisors (see below), whose sum is σ = 22608486. Its totient is φ = 4862000.

The previous prime is 12155029. The next prime is 12155057. The reversal of 12155050 is 5055121.

It can be written as a sum of positive squares in 3 ways, for example, as 9865881 + 2289169 = 3141^2 + 1513^2 .

It is not an unprimeable number, because it can be changed into a prime (12155057) 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 5 ways as a sum of consecutive naturals, for example, 121501 + ... + 121600.

Almost surely, 2^12155050 is an apocalyptic number.

12155050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12155050 is a deficient number, since it is larger than the sum of its proper divisors (10453436).

12155050 is a wasteful number, since it uses less digits than its factorization.

12155050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243113 (or 243108 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 12155050 is about 3486.4093276608. The cubic root of 12155050 is about 229.9246760276.

The spelling of 12155050 in words is "twelve million, one hundred fifty-five thousand, fifty".