55849421 has 4 divisors (see below), whose sum is σ = 57211644. Its totient is φ = 54487200.

The previous prime is 55849363. The next prime is 55849427. The reversal of 55849421 is 12494855.

55849421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12494855 = 5 ⋅2498971.

It can be written as a sum of positive squares in 2 ways, for example, as 4884100 + 50965321 = 2210^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 55849421 - 2⁶ = 55849357 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 (55849427) 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 3 ways as a sum of consecutive naturals, for example, 681050 + ... + 681131.

It is an arithmetic number, because the mean of its divisors is an integer number (14302911).

Almost surely, 2^55849421 is an apocalyptic number.

It is an amenable number.

55849421 is a deficient number, since it is larger than the sum of its proper divisors (1362223).

55849421 is a wasteful number, since it uses less digits than its factorization.

55849421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362222.

The product of its digits is 57600, while the sum is 38.

The square root of 55849421 is about 7473.2470185322. The cubic root of 55849421 is about 382.2430153298.

The spelling of 55849421 in words is "fifty-five million, eight hundred forty-nine thousand, four hundred twenty-one".