9955512 has 48 divisors (see below), whose sum is σ = 30816240. Its totient is φ = 2844288.

The previous prime is 9955511. The next prime is 9955541. The reversal of 9955512 is 2155599.

9955512 is a `hidden beast` number, since 99 + 55 + 512 = 666.

It is a super-3 number, since 3×9955512³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955511) 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 11 ways as a sum of consecutive naturals, for example, 9373 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (642005).

Almost surely, 2^9955512 is an apocalyptic number.

It is an amenable number.

9955512 is an abundant number, since it is smaller than the sum of its proper divisors (20860728).

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

9955512 is a wasteful number, since it uses less digits than its factorization.

9955512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19772 (or 19765 counting only the distinct ones).

The product of its digits is 20250, while the sum is 36.

The square root of 9955512 is about 3155.2356488858. The cubic root of 9955512 is about 215.1235057472.

It can be divided in two parts, 99 and 55512, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 9955512 in words is "nine million, nine hundred fifty-five thousand, five hundred twelve".