53497391 has 2 divisors, whose sum is σ = 53497392. Its totient is φ = 53497390.

The previous prime is 53497363. The next prime is 53497397. The reversal of 53497391 is 19379435.

53497391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53497391 is a prime.

It is a Chen prime.

It is equal to p_3197984 and since 53497391 and 3197984 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53497397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26748695 + 26748696.

It is an arithmetic number, because the mean of its divisors is an integer number (26748696).

Almost surely, 2^53497391 is an apocalyptic number.

53497391 is a deficient number, since it is larger than the sum of its proper divisors (1).

53497391 is an equidigital number, since it uses as much as digits as its factorization.

53497391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 41.

The square root of 53497391 is about 7314.1910694211. The cubic root of 53497391 is about 376.7999769166.

The spelling of 53497391 in words is "fifty-three million, four hundred ninety-seven thousand, three hundred ninety-one".