55055554 has 8 divisors (see below), whose sum is σ = 87441228. Its totient is φ = 25908480.

The previous prime is 55055479. The next prime is 55055569. The reversal of 55055554 is 45555055.

It can be written as a sum of positive squares in 2 ways, for example, as 51912025 + 3143529 = 7205^2 + 1773^2 .

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

It is a super-2 number, since 2×55055554² = 6062228052493832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 1619281 = 55055554 / (5 + 5 + 0 + 5 + 5 + 5 + 5 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809607 + ... + 809674.

Almost surely, 2^55055554 is an apocalyptic number.

55055554 is a deficient number, since it is larger than the sum of its proper divisors (32385674).

55055554 is a wasteful number, since it uses less digits than its factorization.

55055554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619300.

The product of its (nonzero) digits is 62500, while the sum is 34.

The square root of 55055554 is about 7419.9429916947. The cubic root of 55055554 is about 380.4232449419.

The spelling of 55055554 in words is "fifty-five million, fifty-five thousand, five hundred fifty-four".