54145239 has 16 divisors (see below), whose sum is σ = 73592064. Its totient is φ = 35403200.

The previous prime is 54145219. The next prime is 54145249. The reversal of 54145239 is 93254145.

It is a cyclic number.

It is not a de Polignac number, because 54145239 - 2⁵ = 54145207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54145219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49084 + ... + 50174.

It is an arithmetic number, because the mean of its divisors is an integer number (4599504).

Almost surely, 2^54145239 is an apocalyptic number.

54145239 is a deficient number, since it is larger than the sum of its proper divisors (19446825).

54145239 is a wasteful number, since it uses less digits than its factorization.

54145239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its digits is 21600, while the sum is 33.

The square root of 54145239 is about 7358.3448546531. The cubic root of 54145239 is about 378.3148813778.

The spelling of 54145239 in words is "fifty-four million, one hundred forty-five thousand, two hundred thirty-nine".