55666977 has 8 divisors (see below), whose sum is σ = 74355360. Its totient is φ = 37044960.

The previous prime is 55666967. The next prime is 55666987. The reversal of 55666977 is 77966655.

It is an interprime number because it is at equal distance from previous prime (55666967) and next prime (55666987).

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

It is not a de Polignac number, because 55666977 - 2¹¹ = 55664929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55666967) 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 7 ways as a sum of consecutive naturals, for example, 14599 + ... + 18012.

It is an arithmetic number, because the mean of its divisors is an integer number (9294420).

Almost surely, 2^55666977 is an apocalyptic number.

It is an amenable number.

55666977 is a deficient number, since it is larger than the sum of its proper divisors (18688383).

55666977 is a wasteful number, since it uses less digits than its factorization.

55666977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33183.

The product of its digits is 2381400, while the sum is 51.

The square root of 55666977 is about 7461.0305588437. The cubic root of 55666977 is about 381.8263352670.

The spelling of 55666977 in words is "fifty-five million, six hundred sixty-six thousand, nine hundred seventy-seven".