55009055 has 8 divisors (see below), whose sum is σ = 66134832. Its totient is φ = 43924608.

The previous prime is 55009039. The next prime is 55009057. The reversal of 55009055 is 55090055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55009055 - 2⁴ = 55009039 is a prime.

It is a super-2 number, since 2×55009055² = 6051992263986050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55009057) 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 7 ways as a sum of consecutive naturals, for example, 7322 + ... + 12791.

It is an arithmetic number, because the mean of its divisors is an integer number (8266854).

Almost surely, 2^55009055 is an apocalyptic number.

55009055 is a deficient number, since it is larger than the sum of its proper divisors (11125777).

55009055 is a wasteful number, since it uses less digits than its factorization.

55009055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20665.

The product of its (nonzero) digits is 5625, while the sum is 29.

The square root of 55009055 is about 7416.8089499461. The cubic root of 55009055 is about 380.3161150731.

The spelling of 55009055 in words is "fifty-five million, nine thousand, fifty-five".