52140191 has 2 divisors, whose sum is σ = 52140192. Its totient is φ = 52140190.

The previous prime is 52140163. The next prime is 52140211. The reversal of 52140191 is 19104125.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52140191 - 2¹⁴ = 52123807 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 (52140131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26070095 + 26070096.

It is an arithmetic number, because the mean of its divisors is an integer number (26070096).

Almost surely, 2^52140191 is an apocalyptic number.

52140191 is a deficient number, since it is larger than the sum of its proper divisors (1).

52140191 is an equidigital number, since it uses as much as digits as its factorization.

52140191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 52140191 is about 7220.8165050775. The cubic root of 52140191 is about 373.5862406418.

The spelling of 52140191 in words is "fifty-two million, one hundred forty thousand, one hundred ninety-one".