54879191 has 2 divisors, whose sum is σ = 54879192. Its totient is φ = 54879190.

The previous prime is 54879169. The next prime is 54879257. The reversal of 54879191 is 19197845.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54879191 - 2¹⁰ = 54878167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54879131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27439595 + 27439596.

It is an arithmetic number, because the mean of its divisors is an integer number (27439596).

Almost surely, 2^54879191 is an apocalyptic number.

54879191 is a deficient number, since it is larger than the sum of its proper divisors (1).

54879191 is an equidigital number, since it uses as much as digits as its factorization.

54879191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 54879191 is about 7408.0490684120. The cubic root of 54879191 is about 380.0165989979.

The spelling of 54879191 in words is "fifty-four million, eight hundred seventy-nine thousand, one hundred ninety-one".