54887939 has 4 divisors (see below), whose sum is σ = 54942720. Its totient is φ = 54833160.

The previous prime is 54887893. The next prime is 54887957. The reversal of 54887939 is 93978845.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54887939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54887969) 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, 25859 + ... + 27900.

It is an arithmetic number, because the mean of its divisors is an integer number (13735680).

Almost surely, 2^54887939 is an apocalyptic number.

54887939 is a deficient number, since it is larger than the sum of its proper divisors (54781).

54887939 is a wasteful number, since it uses less digits than its factorization.

54887939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54780.

The product of its digits is 2177280, while the sum is 53.

The square root of 54887939 is about 7408.6394837379. The cubic root of 54887939 is about 380.0367900668.

The spelling of 54887939 in words is "fifty-four million, eight hundred eighty-seven thousand, nine hundred thirty-nine".