47755656 has 80 divisors (see below), whose sum is σ = 144074700. Its totient is φ = 14691456.

The previous prime is 47755649. The next prime is 47755661. The reversal of 47755656 is 65655774.

47755656 is a `hidden beast` number, since 47 + 7 + 556 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 5062500 = 6534^2 + 2250^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5590 + ... + 11258.

Almost surely, 2^47755656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47755656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72037350).

47755656 is an abundant number, since it is smaller than the sum of its proper divisors (96319044).

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

47755656 is a wasteful number, since it uses less digits than its factorization.

47755656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700 (or 5687 counting only the distinct ones).

The product of its digits is 882000, while the sum is 45.

The square root of 47755656 is about 6910.5467222210. The cubic root of 47755656 is about 362.8063990521.

The spelling of 47755656 in words is "forty-seven million, seven hundred fifty-five thousand, six hundred fifty-six".