55505273 has 4 divisors (see below), whose sum is σ = 55563408. Its totient is φ = 55447140.

The previous prime is 55505227. The next prime is 55505297. The reversal of 55505273 is 37250555.

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 55505273 - 2¹⁰ = 55504249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55508273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27611 + ... + 29552.

It is an arithmetic number, because the mean of its divisors is an integer number (13890852).

Almost surely, 2^55505273 is an apocalyptic number.

It is an amenable number.

55505273 is a deficient number, since it is larger than the sum of its proper divisors (58135).

55505273 is an equidigital number, since it uses as much as digits as its factorization.

55505273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58134.

The product of its (nonzero) digits is 26250, while the sum is 32.

The square root of 55505273 is about 7450.1861050580. The cubic root of 55505273 is about 381.4562611213.

The spelling of 55505273 in words is "fifty-five million, five hundred five thousand, two hundred seventy-three".