55275813 has 6 divisors (see below), whose sum is σ = 79842854. Its totient is φ = 36850536.

The previous prime is 55275811. The next prime is 55275833. The reversal of 55275813 is 31857255.

55275813 is a `hidden beast` number, since 55 + 27 + 581 + 3 = 666.

55275813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 54863649 + 412164 = 7407^2 + 642^2 .

It is not a de Polignac number, because 55275813 - 2¹ = 55275811 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 (55275811) 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 5 ways as a sum of consecutive naturals, for example, 3070870 + ... + 3070887.

Almost surely, 2^55275813 is an apocalyptic number.

It is an amenable number.

55275813 is a deficient number, since it is larger than the sum of its proper divisors (24567041).

55275813 is a wasteful number, since it uses less digits than its factorization.

55275813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6141763 (or 6141760 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 55275813 is about 7434.7705411801. The cubic root of 55275813 is about 380.9298856243.

The spelling of 55275813 in words is "fifty-five million, two hundred seventy-five thousand, eight hundred thirteen".