55453813 has 16 divisors (see below), whose sum is σ = 60065280. Its totient is φ = 51008256.

The previous prime is 55453781. The next prime is 55453817. The reversal of 55453813 is 31835455.

55453813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55453813 - 2⁵ = 55453781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55453817) 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 15 ways as a sum of consecutive naturals, for example, 210720 + ... + 210982.

It is an arithmetic number, because the mean of its divisors is an integer number (3754080).

Almost surely, 2^55453813 is an apocalyptic number.

It is an amenable number.

55453813 is a deficient number, since it is larger than the sum of its proper divisors (4611467).

55453813 is a wasteful number, since it uses less digits than its factorization.

55453813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its digits is 36000, while the sum is 34.

The square root of 55453813 is about 7446.7316992087. The cubic root of 55453813 is about 381.3383395400.

The spelling of 55453813 in words is "fifty-five million, four hundred fifty-three thousand, eight hundred thirteen".