55667493 has 20 divisors (see below), whose sum is σ = 95038240. Its totient is φ = 31809672.

The previous prime is 55667489. The next prime is 55667527. The reversal of 55667493 is 39476655.

55667493 is a `hidden beast` number, since 556 + 6 + 7 + 4 + 93 = 666.

55667493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55667493 - 2² = 55667489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667393) 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 in 19 ways as a sum of consecutive naturals, for example, 48523 + ... + 49656.

It is an arithmetic number, because the mean of its divisors is an integer number (4751912).

Almost surely, 2^55667493 is an apocalyptic number.

It is an amenable number.

55667493 is a deficient number, since it is larger than the sum of its proper divisors (39370747).

55667493 is an equidigital number, since it uses as much as digits as its factorization.

55667493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98198 (or 98189 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 55667493 is about 7461.0651384370. The cubic root of 55667493 is about 381.8275150316.

The spelling of 55667493 in words is "fifty-five million, six hundred sixty-seven thousand, four hundred ninety-three".