55009803 has 8 divisors (see below), whose sum is σ = 73382400. Its totient is φ = 36655208.

The previous prime is 55009789. The next prime is 55009811. The reversal of 55009803 is 30890055.

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 55009803 - 2¹⁷ = 54878731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55009853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6418 + ... + 12296.

It is an arithmetic number, because the mean of its divisors is an integer number (9172800).

Almost surely, 2^55009803 is an apocalyptic number.

55009803 is a deficient number, since it is larger than the sum of its proper divisors (18372597).

55009803 is a wasteful number, since it uses less digits than its factorization.

55009803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9001.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 55009803 is about 7416.8593757735. The cubic root of 55009803 is about 380.3178388812.

Adding to 55009803 its reverse (30890055), we get a palindrome (85899858).

The spelling of 55009803 in words is "fifty-five million, nine thousand, eight hundred three".