54839019 has 4 divisors (see below), whose sum is σ = 73118696. Its totient is φ = 36559344.

The previous prime is 54839011. The next prime is 54839021. The reversal of 54839019 is 91093845.

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

It is not a de Polignac number, because 54839019 - 2³ = 54839011 is a prime.

It is a super-2 number, since 2×54839019² = 6014636009764722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54839011) 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, 9139834 + ... + 9139839.

It is an arithmetic number, because the mean of its divisors is an integer number (18279674).

Almost surely, 2^54839019 is an apocalyptic number.

54839019 is a deficient number, since it is larger than the sum of its proper divisors (18279677).

54839019 is a wasteful number, since it uses less digits than its factorization.

54839019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18279676.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 54839019 is about 7405.3371969141. The cubic root of 54839019 is about 379.9238513158.

The spelling of 54839019 in words is "fifty-four million, eight hundred thirty-nine thousand, nineteen".