54117839 has 2 divisors, whose sum is σ = 54117840. Its totient is φ = 54117838.

The previous prime is 54117829. The next prime is 54117881. The reversal of 54117839 is 93871145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54117839 - 2¹² = 54113743 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54117829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27058919 + 27058920.

It is an arithmetic number, because the mean of its divisors is an integer number (27058920).

Almost surely, 2^54117839 is an apocalyptic number.

54117839 is a deficient number, since it is larger than the sum of its proper divisors (1).

54117839 is an equidigital number, since it uses as much as digits as its factorization.

54117839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 54117839 is about 7356.4827873108. The cubic root of 54117839 is about 378.2510556567.

The spelling of 54117839 in words is "fifty-four million, one hundred seventeen thousand, eight hundred thirty-nine".