55675987 has 4 divisors (see below), whose sum is σ = 55808656. Its totient is φ = 55543320.

The previous prime is 55675979. The next prime is 55675993. The reversal of 55675987 is 78957655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55675987 - 2³ = 55675979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55675957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65703 + ... + 66544.

It is an arithmetic number, because the mean of its divisors is an integer number (13952164).

Almost surely, 2^55675987 is an apocalyptic number.

55675987 is a deficient number, since it is larger than the sum of its proper divisors (132669).

55675987 is a wasteful number, since it uses less digits than its factorization.

55675987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132668.

The product of its digits is 2646000, while the sum is 52.

The square root of 55675987 is about 7461.6343384007. The cubic root of 55675987 is about 381.8469343719.

The spelling of 55675987 in words is "fifty-five million, six hundred seventy-five thousand, nine hundred eighty-seven".