53018191 has 2 divisors, whose sum is σ = 53018192. Its totient is φ = 53018190.

The previous prime is 53018171. The next prime is 53018201. The reversal of 53018191 is 19181035.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53018191 - 2¹⁵ = 52985423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53018111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26509095 + 26509096.

It is an arithmetic number, because the mean of its divisors is an integer number (26509096).

Almost surely, 2^53018191 is an apocalyptic number.

53018191 is a deficient number, since it is larger than the sum of its proper divisors (1).

53018191 is an equidigital number, since it uses as much as digits as its factorization.

53018191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 53018191 is about 7281.3591451047. The cubic root of 53018191 is about 375.6715457228.

It can be divided in two parts, 530 and 18191, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 53018191 in words is "fifty-three million, eighteen thousand, one hundred ninety-one".