54147839 has 8 divisors (see below), whose sum is σ = 58732128. Its totient is φ = 49719040.

The previous prime is 54147833. The next prime is 54147869. The reversal of 54147839 is 93874145.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54147839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54147796 and 54147805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54147833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38147 + ... + 39540.

It is an arithmetic number, because the mean of its divisors is an integer number (7341516).

Almost surely, 2^54147839 is an apocalyptic number.

54147839 is a deficient number, since it is larger than the sum of its proper divisors (4584289).

54147839 is a wasteful number, since it uses less digits than its factorization.

54147839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77745.

The product of its digits is 120960, while the sum is 41.

The square root of 54147839 is about 7358.5215226973. The cubic root of 54147839 is about 378.3209367144.

The spelling of 54147839 in words is "fifty-four million, one hundred forty-seven thousand, eight hundred thirty-nine".