11959550 has 24 divisors (see below), whose sum is σ = 23417400. Its totient is φ = 4531680.

The previous prime is 11959543. The next prime is 11959559. The reversal of 11959550 is 5595911.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11959550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11959559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5345 + ... + 7244.

It is an arithmetic number, because the mean of its divisors is an integer number (975725).

Almost surely, 2^11959550 is an apocalyptic number.

11959550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11959550 is a deficient number, since it is larger than the sum of its proper divisors (11457850).

11959550 is a wasteful number, since it uses less digits than its factorization.

11959550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12620 (or 12615 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 35.

The square root of 11959550 is about 3458.2582321163. The cubic root of 11959550 is about 228.6853161990.

The spelling of 11959550 in words is "eleven million, nine hundred fifty-nine thousand, five hundred fifty".