54887947 has 4 divisors (see below), whose sum is σ = 54906280. Its totient is φ = 54869616.

The previous prime is 54887893. The next prime is 54887957. The reversal of 54887947 is 74978845.

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 54887947 - 2¹⁵ = 54855179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54887894 and 54887903.

It is not an unprimeable number, because it can be changed into a prime (54887957) 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 3 ways as a sum of consecutive naturals, for example, 3513 + ... + 11050.

It is an arithmetic number, because the mean of its divisors is an integer number (13726570).

Almost surely, 2^54887947 is an apocalyptic number.

54887947 is a deficient number, since it is larger than the sum of its proper divisors (18333).

54887947 is a wasteful number, since it uses less digits than its factorization.

54887947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18332.

The product of its digits is 2257920, while the sum is 52.

The square root of 54887947 is about 7408.6400236481. The cubic root of 54887947 is about 380.0368085305.

The spelling of 54887947 in words is "fifty-four million, eight hundred eighty-seven thousand, nine hundred forty-seven".