53351993 has 2 divisors, whose sum is σ = 53351994. Its totient is φ = 53351992.

The previous prime is 53351971. The next prime is 53351999. The reversal of 53351993 is 39915335.

53351993 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 can be written as a sum of positive squares in only one way, i.e., 33965584 + 19386409 = 5828^2 + 4403^2 .

It is a cyclic number.

It is not a de Polignac number, because 53351993 - 2⁶ = 53351929 is a prime.

It is not a weakly prime, because it can be changed into another prime (53351999) 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, 26675996 + 26675997.

It is an arithmetic number, because the mean of its divisors is an integer number (26675997).

Almost surely, 2^53351993 is an apocalyptic number.

It is an amenable number.

53351993 is a deficient number, since it is larger than the sum of its proper divisors (1).

53351993 is an equidigital number, since it uses as much as digits as its factorization.

53351993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54675, while the sum is 38.

The square root of 53351993 is about 7304.2448617225. The cubic root of 53351993 is about 376.4583049804.

The spelling of 53351993 in words is "fifty-three million, three hundred fifty-one thousand, nine hundred ninety-three".