54052191 has 12 divisors (see below), whose sum is σ = 80967432. Its totient is φ = 36034632.

The previous prime is 54052157. The next prime is 54052217. The reversal of 54052191 is 19125045.

54052191 is a `hidden beast` number, since 54 + 0 + 521 + 91 = 666.

It is not a de Polignac number, because 54052191 - 2¹⁰ = 54051167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54052121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110976 + ... + 111461.

It is an arithmetic number, because the mean of its divisors is an integer number (6747286).

Almost surely, 2^54052191 is an apocalyptic number.

54052191 is a deficient number, since it is larger than the sum of its proper divisors (26915241).

54052191 is an equidigital number, since it uses as much as digits as its factorization.

54052191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222452 (or 222440 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 54052191 is about 7352.0195184725. The cubic root of 54052191 is about 378.0980471283.

The spelling of 54052191 in words is "fifty-four million, fifty-two thousand, one hundred ninety-one".