53085749 has 2 divisors, whose sum is σ = 53085750. Its totient is φ = 53085748.

The previous prime is 53085743. The next prime is 53085751. The reversal of 53085749 is 94758035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51940849 + 1144900 = 7207^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 53085749 - 2²⁰ = 52037173 is a prime.

Together with 53085751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53085743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26542874 + 26542875.

It is an arithmetic number, because the mean of its divisors is an integer number (26542875).

Almost surely, 2^53085749 is an apocalyptic number.

It is an amenable number.

53085749 is a deficient number, since it is larger than the sum of its proper divisors (1).

53085749 is an equidigital number, since it uses as much as digits as its factorization.

53085749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 53085749 is about 7285.9967746356. The cubic root of 53085749 is about 375.8310434694.

The spelling of 53085749 in words is "fifty-three million, eighty-five thousand, seven hundred forty-nine".