55320123 has 8 divisors (see below), whose sum is σ = 73800000. Its totient is φ = 36860168.

The previous prime is 55320101. The next prime is 55320131. The reversal of 55320123 is 32102355.

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 55320123 - 2¹⁴ = 55303739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55320123.

It is not an unprimeable number, because it can be changed into a prime (55320173) 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, 3628 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (9225000).

Almost surely, 2^55320123 is an apocalyptic number.

55320123 is a deficient number, since it is larger than the sum of its proper divisors (18479877).

55320123 is a wasteful number, since it uses less digits than its factorization.

55320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 55320123 is about 7437.7498613492. The cubic root of 55320123 is about 381.0316449904.

Adding to 55320123 its reverse (32102355), we get a palindrome (87422478).

The spelling of 55320123 in words is "fifty-five million, three hundred twenty thousand, one hundred twenty-three".