53864191 has 2 divisors, whose sum is σ = 53864192. Its totient is φ = 53864190.

The previous prime is 53864131. The next prime is 53864207. The reversal of 53864191 is 19146835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53864191 - 2¹³ = 53855999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53864191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53864131) 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, 26932095 + 26932096.

It is an arithmetic number, because the mean of its divisors is an integer number (26932096).

Almost surely, 2^53864191 is an apocalyptic number.

53864191 is a deficient number, since it is larger than the sum of its proper divisors (1).

53864191 is an equidigital number, since it uses as much as digits as its factorization.

53864191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 53864191 is about 7339.2227790141. Note that the first 3 decimals coincide. The cubic root of 53864191 is about 377.6591811469.

The spelling of 53864191 in words is "fifty-three million, eight hundred sixty-four thousand, one hundred ninety-one".