55693493 has 2 divisors, whose sum is σ = 55693494. Its totient is φ = 55693492.

The previous prime is 55693483. The next prime is 55693501. The reversal of 55693493 is 39439655.

55693493 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., 53553124 + 2140369 = 7318^2 + 1463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55693493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55693403) 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, 27846746 + 27846747.

It is an arithmetic number, because the mean of its divisors is an integer number (27846747).

Almost surely, 2^55693493 is an apocalyptic number.

It is an amenable number.

55693493 is a deficient number, since it is larger than the sum of its proper divisors (1).

55693493 is an equidigital number, since it uses as much as digits as its factorization.

55693493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 44.

The square root of 55693493 is about 7462.8073136052. The cubic root of 55693493 is about 381.8869510967.

It can be divided in two parts, 556 and 93493, that added together give a palindrome (94049).

The spelling of 55693493 in words is "fifty-five million, six hundred ninety-three thousand, four hundred ninety-three".