56755755 has 128 divisors (see below), whose sum is σ = 126720000. Its totient is φ = 23514624.

The previous prime is 56755753. The next prime is 56755757. The reversal of 56755755 is 55755765.

56755755 is a `hidden beast` number, since 5 + 6 + 75 + 575 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (56755753) and next prime (56755757).

It is not a de Polignac number, because 56755755 - 2¹ = 56755753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56755755.

It is not an unprimeable number, because it can be changed into a prime (56755753) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 520641 + ... + 520749.

It is an arithmetic number, because the mean of its divisors is an integer number (990000).

Almost surely, 2^56755755 is an apocalyptic number.

56755755 is an abundant number, since it is smaller than the sum of its proper divisors (69964245).

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

56755755 is a wasteful number, since it uses less digits than its factorization.

56755755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its digits is 918750, while the sum is 45.

The square root of 56755755 is about 7533.6415497421. The cubic root of 56755755 is about 384.2996318617.

The spelling of 56755755 in words is "fifty-six million, seven hundred fifty-five thousand, seven hundred fifty-five".