55305123 has 4 divisors (see below), whose sum is σ = 73740168. Its totient is φ = 36870080.

The previous prime is 55305079. The next prime is 55305127. The reversal of 55305123 is 32150355.

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 55305123 - 2¹³ = 55296931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55305093 and 55305102.

It is not an unprimeable number, because it can be changed into a prime (55305127) 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, 9217518 + ... + 9217523.

It is an arithmetic number, because the mean of its divisors is an integer number (18435042).

Almost surely, 2^55305123 is an apocalyptic number.

55305123 is a deficient number, since it is larger than the sum of its proper divisors (18435045).

55305123 is a wasteful number, since it uses less digits than its factorization.

55305123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18435044.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 55305123 is about 7436.7414234999. The cubic root of 55305123 is about 380.9972030850.

Adding to 55305123 its reverse (32150355), we get a palindrome (87455478).

The spelling of 55305123 in words is "fifty-five million, three hundred five thousand, one hundred twenty-three".