55585229 has 4 divisors (see below), whose sum is σ = 63525984. Its totient is φ = 47644476.

The previous prime is 55585219. The next prime is 55585237. The reversal of 55585229 is 92258555.

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 55585229 - 2²⁰ = 54536653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55585219) 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, 3970367 + ... + 3970380.

It is an arithmetic number, because the mean of its divisors is an integer number (15881496).

Almost surely, 2^55585229 is an apocalyptic number.

It is an amenable number.

55585229 is a deficient number, since it is larger than the sum of its proper divisors (7940755).

55585229 is an equidigital number, since it uses as much as digits as its factorization.

55585229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940754.

The product of its digits is 180000, while the sum is 41.

The square root of 55585229 is about 7455.5502144376. The cubic root of 55585229 is about 381.6393373218.

The spelling of 55585229 in words is "fifty-five million, five hundred eighty-five thousand, two hundred twenty-nine".