55755987 has 8 divisors (see below), whose sum is σ = 84961536. Its totient is φ = 31860552.

The previous prime is 55755983. The next prime is 55756027. The reversal of 55755987 is 78955755.

55755987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55755987 - 2² = 55755983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55755983) 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 7 ways as a sum of consecutive naturals, for example, 1327503 + ... + 1327544.

It is an arithmetic number, because the mean of its divisors is an integer number (10620192).

Almost surely, 2^55755987 is an apocalyptic number.

55755987 is a deficient number, since it is larger than the sum of its proper divisors (29205549).

55755987 is a wasteful number, since it uses less digits than its factorization.

55755987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655057.

The product of its digits is 2205000, while the sum is 51.

The square root of 55755987 is about 7466.9931699446. The cubic root of 55755987 is about 382.0297369100.

The spelling of 55755987 in words is "fifty-five million, seven hundred fifty-five thousand, nine hundred eighty-seven".