53928191 has 2 divisors, whose sum is σ = 53928192. Its totient is φ = 53928190.

The previous prime is 53928179. The next prime is 53928211. The reversal of 53928191 is 19182935.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53928191 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53928691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26964095 + 26964096.

It is an arithmetic number, because the mean of its divisors is an integer number (26964096).

Almost surely, 2^53928191 is an apocalyptic number.

53928191 is a deficient number, since it is larger than the sum of its proper divisors (1).

53928191 is an equidigital number, since it uses as much as digits as its factorization.

53928191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 38.

The square root of 53928191 is about 7343.5816193462. The cubic root of 53928191 is about 377.8086968126.

The spelling of 53928191 in words is "fifty-three million, nine hundred twenty-eight thousand, one hundred ninety-one".