54945239 has 2 divisors, whose sum is σ = 54945240. Its totient is φ = 54945238.

The previous prime is 54945217. The next prime is 54945251. The reversal of 54945239 is 93254945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54945239 - 2²⁰ = 53896663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54945196 and 54945205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54945269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27472619 + 27472620.

It is an arithmetic number, because the mean of its divisors is an integer number (27472620).

Almost surely, 2^54945239 is an apocalyptic number.

54945239 is a deficient number, since it is larger than the sum of its proper divisors (1).

54945239 is an equidigital number, since it uses as much as digits as its factorization.

54945239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The square root of 54945239 is about 7412.5055817854. The cubic root of 54945239 is about 380.1689899342.

The spelling of 54945239 in words is "fifty-four million, nine hundred forty-five thousand, two hundred thirty-nine".