54665839 has 2 divisors, whose sum is σ = 54665840. Its totient is φ = 54665838.

The previous prime is 54665837. The next prime is 54665873. The reversal of 54665839 is 93856645.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54665839 - 2¹ = 54665837 is a prime.

Together with 54665837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54665837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27332919 + 27332920.

It is an arithmetic number, because the mean of its divisors is an integer number (27332920).

Almost surely, 2^54665839 is an apocalyptic number.

54665839 is a deficient number, since it is larger than the sum of its proper divisors (1).

54665839 is an equidigital number, since it uses as much as digits as its factorization.

54665839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 46.

The square root of 54665839 is about 7393.6350329185. The cubic root of 54665839 is about 379.5235001588.

The spelling of 54665839 in words is "fifty-four million, six hundred sixty-five thousand, eight hundred thirty-nine".