54128507 has 2 divisors, whose sum is σ = 54128508. Its totient is φ = 54128506.

The previous prime is 54128497. The next prime is 54128519. The reversal of 54128507 is 70582145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54128507 - 2⁴ = 54128491 is a prime.

It is not a weakly prime, because it can be changed into another prime (54128707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27064253 + 27064254.

It is an arithmetic number, because the mean of its divisors is an integer number (27064254).

Almost surely, 2^54128507 is an apocalyptic number.

54128507 is a deficient number, since it is larger than the sum of its proper divisors (1).

54128507 is an equidigital number, since it uses as much as digits as its factorization.

54128507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 54128507 is about 7357.2078263428. The cubic root of 54128507 is about 378.2759083191.

The spelling of 54128507 in words is "fifty-four million, one hundred twenty-eight thousand, five hundred seven".