55554553 has 4 divisors (see below), whose sum is σ = 55573888. Its totient is φ = 55535220.

The previous prime is 55554539. The next prime is 55554559. The reversal of 55554553 is 35545555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55554553 - 2⁹ = 55554041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55554559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4401 + ... + 11422.

It is an arithmetic number, because the mean of its divisors is an integer number (13893472).

Almost surely, 2^55554553 is an apocalyptic number.

It is an amenable number.

55554553 is a deficient number, since it is larger than the sum of its proper divisors (19335).

55554553 is a wasteful number, since it uses less digits than its factorization.

55554553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19334.

The product of its digits is 187500, while the sum is 37.

The square root of 55554553 is about 7453.4926712247. The cubic root of 55554553 is about 381.5691188914.

The spelling of 55554553 in words is "fifty-five million, five hundred fifty-four thousand, five hundred fifty-three".