55180003 has 4 divisors (see below), whose sum is σ = 55214848. Its totient is φ = 55145160.

The previous prime is 55179989. The next prime is 55180019. The reversal of 55180003 is 30008155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55180003 - 2²¹ = 53082851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55180033) 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, 14928 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (13803712).

Almost surely, 2^55180003 is an apocalyptic number.

55180003 is a deficient number, since it is larger than the sum of its proper divisors (34845).

55180003 is a wasteful number, since it uses less digits than its factorization.

55180003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34844.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 55180003 is about 7428.3243736391. The cubic root of 55180003 is about 380.7096687550.

Adding to 55180003 its reverse (30008155), we get a palindrome (85188158).

The spelling of 55180003 in words is "fifty-five million, one hundred eighty thousand, three".