55200023 has 4 divisors (see below), whose sum is σ = 57600048. Its totient is φ = 52800000.

The previous prime is 55200011. The next prime is 55200053. The reversal of 55200023 is 32000255.

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 55200023 - 2⁴ = 55200007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55199974 and 55200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55200053) 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, 1199978 + ... + 1200023.

It is an arithmetic number, because the mean of its divisors is an integer number (14400012).

Almost surely, 2^55200023 is an apocalyptic number.

55200023 is a deficient number, since it is larger than the sum of its proper divisors (2400025).

55200023 is a wasteful number, since it uses less digits than its factorization.

55200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400024.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55200023 is about 7429.6717962505. The cubic root of 55200023 is about 380.7557052754.

Adding to 55200023 its reverse (32000255), we get a palindrome (87200278).

The spelling of 55200023 in words is "fifty-five million, two hundred thousand, twenty-three".