54986139 has 24 divisors (see below), whose sum is σ = 86311680. Its totient is φ = 33530112.

The previous prime is 54986137. The next prime is 54986159. The reversal of 54986139 is 93168945.

It is a happy number.

54986139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54986139 - 2¹ = 54986137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54986094 and 54986103.

It is not an unprimeable number, because it can be changed into a prime (54986137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11142 + ... + 15300.

It is an arithmetic number, because the mean of its divisors is an integer number (3596320).

Almost surely, 2^54986139 is an apocalyptic number.

54986139 is a deficient number, since it is larger than the sum of its proper divisors (31325541).

54986139 is a wasteful number, since it uses less digits than its factorization.

54986139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291 (or 4288 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 54986139 is about 7415.2639197806. The cubic root of 54986139 is about 380.2632962865.

The spelling of 54986139 in words is "fifty-four million, nine hundred eighty-six thousand, one hundred thirty-nine".