54444987 has 16 divisors (see below), whose sum is σ = 80862880. Its totient is φ = 36205056.

The previous prime is 54444961. The next prime is 54444989. The reversal of 54444987 is 78944445.

It is not a de Polignac number, because 54444987 - 2²⁴ = 37667771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54444989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9363 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (5053930).

Almost surely, 2^54444987 is an apocalyptic number.

54444987 is a deficient number, since it is larger than the sum of its proper divisors (26417893).

54444987 is a wasteful number, since it uses less digits than its factorization.

54444987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099 (or 5093 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 54444987 is about 7378.6846388770. The cubic root of 54444987 is about 379.0117140278.

The spelling of 54444987 in words is "fifty-four million, four hundred forty-four thousand, nine hundred eighty-seven".