55488985 has 8 divisors (see below), whose sum is σ = 67525056. Its totient is φ = 43765680.

The previous prime is 55488959. The next prime is 55489019. The reversal of 55488985 is 58988455.

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

It is not a de Polignac number, because 55488985 - 2¹⁹ = 54964697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77799 + ... + 78508.

It is an arithmetic number, because the mean of its divisors is an integer number (8440632).

Almost surely, 2^55488985 is an apocalyptic number.

It is an amenable number.

55488985 is a deficient number, since it is larger than the sum of its proper divisors (12036071).

55488985 is a wasteful number, since it uses less digits than its factorization.

55488985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156383.

The product of its digits is 2304000, while the sum is 52.

The square root of 55488985 is about 7449.0928977963. The cubic root of 55488985 is about 381.4189447422.

The spelling of 55488985 in words is "fifty-five million, four hundred eighty-eight thousand, nine hundred eighty-five".